diff --git a/web/app/components/datasets/documents/detail/completed/SegmentCard.tsx b/web/app/components/datasets/documents/detail/completed/SegmentCard.tsx
index 0f59070d12..264d62b68a 100644
--- a/web/app/components/datasets/documents/detail/completed/SegmentCard.tsx
+++ b/web/app/components/datasets/documents/detail/completed/SegmentCard.tsx
@@ -8,7 +8,7 @@ import {
 import { StatusItem } from '../../list'
 import style from '../../style.module.css'
 import s from './style.module.css'
-import { SegmentIndexTag } from './index'
+import { SegmentIndexTag } from './common/segment-index-tag'
 import cn from '@/utils/classnames'
 import Confirm from '@/app/components/base/confirm'
 import Switch from '@/app/components/base/switch'
diff --git a/web/app/components/datasets/documents/detail/completed/full-screen-drawer.tsx b/web/app/components/datasets/documents/detail/completed/common/full-screen-drawer.tsx
similarity index 100%
rename from web/app/components/datasets/documents/detail/completed/full-screen-drawer.tsx
rename to web/app/components/datasets/documents/detail/completed/common/full-screen-drawer.tsx
diff --git a/web/app/components/datasets/documents/detail/completed/common/regeneration-modal.tsx b/web/app/components/datasets/documents/detail/completed/common/regeneration-modal.tsx
index bc7ad4a73a..c9356b7f8a 100644
--- a/web/app/components/datasets/documents/detail/completed/common/regeneration-modal.tsx
+++ b/web/app/components/datasets/documents/detail/completed/common/regeneration-modal.tsx
@@ -1,6 +1,7 @@
-import React, { type FC, useEffect, useRef, useState } from 'react'
+import React, { type FC, useRef, useState } from 'react'
 import { useTranslation } from 'react-i18next'
 import { RiLoader2Line } from '@remixicon/react'
+import { useCountDown } from 'ahooks'
 import Modal from '@/app/components/base/modal'
 import Button from '@/app/components/base/button'
 import { useEventEmitterContextContext } from '@/context/event-emitter'
@@ -18,15 +19,15 @@ const DefaultContent: FC<IDefaultContentProps> = React.memo(({
 
   return (
     <>
-      <div className='p-6 pb-4'>
-        <span className='text-text-primary title-2xl-semi-bold'>{t('datasetDocuments.segment.regenerationConfirm')}</span>
-        <p className='text-text-secondary system-md-regular'>{t('datasetDocuments.segment.regenerationWarning')}</p>
+      <div className='pb-4'>
+        <span className='text-text-primary title-2xl-semi-bold'>{t('datasetDocuments.segment.regenerationConfirmTitle')}</span>
+        <p className='text-text-secondary system-md-regular'>{t('datasetDocuments.segment.regenerationConfirmMessage')}</p>
       </div>
-      <div className='flex justify-end gap-x-2 p-6'>
+      <div className='flex justify-end gap-x-2 pt-6'>
         <Button onClick={onCancel}>
           {t('common.operation.cancel')}
         </Button>
-        <Button destructive onClick={onConfirm}>
+        <Button variant='warning' destructive onClick={onConfirm}>
           {t('common.operation.regenerate')}
         </Button>
       </div>
@@ -34,18 +35,20 @@ const DefaultContent: FC<IDefaultContentProps> = React.memo(({
   )
 })
 
+DefaultContent.displayName = 'DefaultContent'
+
 const RegeneratingContent: FC = React.memo(() => {
   const { t } = useTranslation()
 
   return (
     <>
-      <div className='p-6 pb-4'>
+      <div className='pb-4'>
         <span className='text-text-primary title-2xl-semi-bold'>{t('datasetDocuments.segment.regeneratingTitle')}</span>
         <p className='text-text-secondary system-md-regular'>{t('datasetDocuments.segment.regeneratingMessage')}</p>
       </div>
-      <div className='flex justify-end p-6'>
-        <Button destructive disabled className='inline-flex items-center gap-x-0.5'>
-          <RiLoader2Line className='w-4 h-4 text-components-button-destructive-primary-text-disabled' />
+      <div className='flex justify-end pt-6'>
+        <Button variant='warning' destructive disabled className='inline-flex items-center gap-x-0.5'>
+          <RiLoader2Line className='w-4 h-4 text-components-button-destructive-primary-text-disabled animate-spin' />
           <span>{t('common.operation.regenerate')}</span>
         </Button>
       </div>
@@ -53,6 +56,8 @@ const RegeneratingContent: FC = React.memo(() => {
   )
 })
 
+RegeneratingContent.displayName = 'RegeneratingContent'
+
 type IRegenerationCompletedContentProps = {
   onClose: () => void
 }
@@ -61,67 +66,64 @@ const RegenerationCompletedContent: FC<IRegenerationCompletedContentProps> = Rea
   onClose,
 }) => {
   const { t } = useTranslation()
-  const [countDown, setCountDown] = useState(5)
-  const timerRef = useRef<any>(null)
-
-  useEffect(() => {
-    timerRef.current = setInterval(() => {
-      if (countDown > 0)
-        setCountDown(countDown - 1)
-      else
-        clearInterval(timerRef.current)
-    }, 1000)
-    return () => {
-      clearInterval(timerRef.current)
-    }
-  }, [])
+  const targetTime = useRef(Date.now() + 5000)
+  const [countdown] = useCountDown({
+    targetDate: targetTime.current,
+    onEnd: () => {
+      onClose()
+    },
+  })
 
   return (
     <>
-      <div className='p-6 pb-4'>
+      <div className='pb-4'>
         <span className='text-text-primary title-2xl-semi-bold'>{t('datasetDocuments.segment.regenerationSuccessTitle')}</span>
         <p className='text-text-secondary system-md-regular'>{t('datasetDocuments.segment.regenerationSuccessMessage')}</p>
       </div>
-      <div className='flex justify-end p-6'>
+      <div className='flex justify-end pt-6'>
         <Button variant='primary' onClick={onClose}>
-          {`${t('common.operation.close')}(${countDown})`}
+          {`${t('common.operation.close')}${countdown === 0 ? '' : `(${Math.round(countdown / 1000)})`}`}
         </Button>
       </div>
     </>
   )
 })
 
+RegenerationCompletedContent.displayName = 'RegenerationCompletedContent'
+
 type IRegenerationModalProps = {
   isShow: boolean
   onConfirm: () => void
   onCancel: () => void
+  onClose: () => void
 }
 
 const RegenerationModal: FC<IRegenerationModalProps> = ({
   isShow,
   onConfirm,
   onCancel,
+  onClose,
 }) => {
   const [loading, setLoading] = useState(false)
-  const [updateSuccess, setUpdateSuccess] = useState(false)
+  const [updateSucceeded, setUpdateSucceeded] = useState(false)
   const { eventEmitter } = useEventEmitterContextContext()
 
   eventEmitter?.useSubscription((v) => {
     if (v === 'update-segment') {
       setLoading(true)
-      setUpdateSuccess(false)
+      setUpdateSucceeded(false)
     }
     if (v === 'update-segment-success')
-      setUpdateSuccess(true)
+      setUpdateSucceeded(true)
     if (v === 'update-segment-done')
       setLoading(false)
   })
 
   return (
     <Modal isShow={isShow} onClose={() => {}} className='!max-w-[480px] !rounded-2xl'>
-      {(!loading && !updateSuccess) && <DefaultContent onCancel={onCancel} onConfirm={onConfirm} />}
-      {(loading && !updateSuccess) && <RegeneratingContent />}
-      {!loading && updateSuccess && <RegenerationCompletedContent onClose={onCancel} />}
+      {!loading && !updateSucceeded && <DefaultContent onCancel={onCancel} onConfirm={onConfirm} />}
+      {loading && !updateSucceeded && <RegeneratingContent />}
+      {!loading && updateSucceeded && <RegenerationCompletedContent onClose={onClose} />}
     </Modal>
   )
 }
diff --git a/web/app/components/datasets/documents/detail/completed/common/segment-index-tag.tsx b/web/app/components/datasets/documents/detail/completed/common/segment-index-tag.tsx
new file mode 100644
index 0000000000..7d21311c9a
--- /dev/null
+++ b/web/app/components/datasets/documents/detail/completed/common/segment-index-tag.tsx
@@ -0,0 +1,36 @@
+import React, { type FC, useMemo } from 'react'
+import { Chunk } from '@/app/components/base/icons/src/public/knowledge'
+import cn from '@/utils/classnames'
+
+type ISegmentIndexTagProps = {
+  positionId?: string | number
+  label?: string
+  className?: string
+  labelPrefix?: string
+}
+
+export const SegmentIndexTag: FC<ISegmentIndexTagProps> = ({
+  positionId,
+  label,
+  className,
+  labelPrefix = 'Chunk',
+}) => {
+  const localPositionId = useMemo(() => {
+    const positionIdStr = String(positionId)
+    if (positionIdStr.length >= 3)
+      return `${labelPrefix}-${positionId}`
+    return `${labelPrefix}-${positionIdStr.padStart(2, '0')}`
+  }, [positionId, labelPrefix])
+  return (
+    <div className={cn('flex items-center', className)}>
+      <Chunk className='w-3 h-3 p-[1px] text-text-tertiary mr-0.5' />
+      <div className='text-text-tertiary system-xs-medium'>
+        {label || localPositionId}
+      </div>
+    </div>
+  )
+}
+
+SegmentIndexTag.displayName = 'SegmentIndexTag'
+
+export default React.memo(SegmentIndexTag)
diff --git a/web/app/components/datasets/documents/detail/completed/index.tsx b/web/app/components/datasets/documents/detail/completed/index.tsx
index 0b5414a816..dda54cd0ea 100644
--- a/web/app/components/datasets/documents/detail/completed/index.tsx
+++ b/web/app/components/datasets/documents/detail/completed/index.tsx
@@ -13,7 +13,7 @@ import BatchAction from './batch-action'
 import SegmentDetail from './segment-detail'
 import SegmentCard from './segment-card'
 import ChildSegmentList from './child-segment-list'
-import FullScreenDrawer from './full-screen-drawer'
+import FullScreenDrawer from './common/full-screen-drawer'
 import Pagination from '@/app/components/base/pagination'
 import cn from '@/utils/classnames'
 import { formatNumber } from '@/utils/format'
@@ -192,7 +192,6 @@ const Completed: FC<ICompletedProps> = ({
   }
 
   const { mutateAsync: enableSegment } = useEnableSegment()
-
   const { mutateAsync: disableSegment } = useDisableSegment()
 
   const onChangeSwitch = useCallback(async (enable: boolean, segId?: string) => {
@@ -229,18 +228,6 @@ const Completed: FC<ICompletedProps> = ({
   // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [datasetId, documentId, selectedSegmentIds])
 
-  const onCancelBatchOperation = useCallback(() => {
-    setSelectedSegmentIds([])
-  }, [])
-
-  const onSelected = useCallback((segId: string) => {
-    setSelectedSegmentIds(prev =>
-      prev.includes(segId)
-        ? prev.filter(id => id !== segId)
-        : [...prev, segId],
-    )
-  }, [])
-
   const handleUpdateSegment = async (
     segmentId: string,
     question: string,
@@ -275,7 +262,8 @@ const Completed: FC<ICompletedProps> = ({
       eventEmitter?.emit('update-segment')
       const res = await updateSegment({ datasetId, documentId, segmentId, body: params })
       notify({ type: 'success', message: t('common.actionMsg.modifiedSuccessfully') })
-      onCloseDrawer()
+      if (!needRegenerate)
+        onCloseDrawer()
       for (const seg of segments) {
         if (seg.id === segmentId) {
           seg.answer = res.data.answer
@@ -301,6 +289,18 @@ const Completed: FC<ICompletedProps> = ({
       resetList()
   }, [importStatus, resetList])
 
+  const onCancelBatchOperation = useCallback(() => {
+    setSelectedSegmentIds([])
+  }, [])
+
+  const onSelected = useCallback((segId: string) => {
+    setSelectedSegmentIds(prev =>
+      prev.includes(segId)
+        ? prev.filter(id => id !== segId)
+        : [...prev, segId],
+    )
+  }, [])
+
   const isAllSelected = useMemo(() => {
     return segments.length > 0 && segments.every(seg => selectedSegmentIds.includes(seg.id))
   }, [segments, selectedSegmentIds])
diff --git a/web/app/components/datasets/documents/detail/completed/segment-card.tsx b/web/app/components/datasets/documents/detail/completed/segment-card.tsx
index 18f59df345..f21f72053d 100644
--- a/web/app/components/datasets/documents/detail/completed/segment-card.tsx
+++ b/web/app/components/datasets/documents/detail/completed/segment-card.tsx
@@ -6,7 +6,8 @@ import { useDocumentContext } from '../index'
 import ChildSegmentList from './child-segment-list'
 import Tag from './common/tag'
 import Dot from './common/dot'
-import { SegmentIndexTag, useSegmentListContext } from '.'
+import { SegmentIndexTag } from './common/segment-index-tag'
+import { useSegmentListContext } from './index'
 import type { SegmentDetailModel } from '@/models/datasets'
 import Indicator from '@/app/components/header/indicator'
 import Switch from '@/app/components/base/switch'
@@ -108,7 +109,7 @@ const SegmentCard: FC<ISegmentCardProps> = ({
       <div className='h-5 relative flex items-center justify-between'>
         <>
           <div className='flex items-center gap-x-2'>
-            <SegmentIndexTag positionId={position} className={textOpacity} />
+            <SegmentIndexTag positionId={position} className={textOpacity} labelPrefix={isGeneralMode ? 'Chunk' : 'Parent-Chunk'} />
             <Dot />
             <div className={cn('text-text-tertiary system-xs-medium', textOpacity)}>{`${formatNumber(word_count)} Characters`}</div>
             <Dot />
@@ -205,7 +206,7 @@ const SegmentCard: FC<ISegmentCardProps> = ({
             </div>}
             {
               isFullDocMode
-                ? <button className='mt-0.5 mb-2 text-text-accent system-xs-semibold-uppercase' onClick={() => onClick?.()}>VIEW MORE</button>
+                ? <button className='mt-0.5 mb-2 text-text-accent system-xs-semibold-uppercase' onClick={() => onClick?.()}>{t('common.operation.viewMore')}</button>
                 : null
             }
             {
diff --git a/web/app/components/datasets/documents/detail/completed/segment-detail.tsx b/web/app/components/datasets/documents/detail/completed/segment-detail.tsx
index 5f9262cab9..4f77da7856 100644
--- a/web/app/components/datasets/documents/detail/completed/segment-detail.tsx
+++ b/web/app/components/datasets/documents/detail/completed/segment-detail.tsx
@@ -1,4 +1,4 @@
-import React, { type FC, useState } from 'react'
+import React, { type FC, useMemo, useState } from 'react'
 import { useTranslation } from 'react-i18next'
 import {
   RiCloseLine,
@@ -9,7 +9,8 @@ import ActionButtons from './common/action-buttons'
 import ChunkContent from './common/chunk-content'
 import Keywords from './common/keywords'
 import RegenerationModal from './common/regeneration-modal'
-import { SegmentIndexTag, useSegmentListContext } from './index'
+import { SegmentIndexTag } from './common/segment-index-tag'
+import { useSegmentListContext } from './index'
 import type { SegmentDetailModel } from '@/models/datasets'
 import { useEventEmitterContextContext } from '@/context/event-emitter'
 import { formatNumber } from '@/utils/format'
@@ -74,13 +75,17 @@ const SegmentDetail: FC<ISegmentDetailProps> = ({
     onUpdate(segInfo?.id || '', question, answer, keywords, true)
   }
 
+  const isParentChildMode = useMemo(() => {
+    return mode === 'hierarchical'
+  }, [mode])
+
   return (
     <div className={'flex flex-col h-full'}>
       <div className={classNames('flex items-center justify-between', fullScreen ? 'py-3 pr-4 pl-6 border border-divider-subtle' : 'pt-3 pr-3 pl-4')}>
         <div className='flex flex-col'>
           <div className='text-text-primary system-xl-semibold'>{isEditMode ? 'Edit Chunk' : 'Chunk Detail'}</div>
           <div className='flex items-center gap-x-2'>
-            <SegmentIndexTag positionId={segInfo?.position || ''} />
+            <SegmentIndexTag positionId={segInfo?.position || ''} labelPrefix={isParentChildMode ? 'Parent-Chunk' : 'Chunk'} />
             <span className='text-text-quaternary system-xs-medium'>·</span>
             <span className='text-text-tertiary system-xs-medium'>{formatNumber(isEditMode ? question.length : segInfo?.word_count as number)} {t('datasetDocuments.segment.characters')}</span>
           </div>
@@ -135,11 +140,16 @@ const SegmentDetail: FC<ISegmentDetailProps> = ({
           />
         </div>
       )}
-      <RegenerationModal
-        isShow={showRegenerationModal}
-        onConfirm={onConfirmRegeneration}
-        onCancel={onCancelRegeneration}
-      />
+      {
+        showRegenerationModal && (
+          <RegenerationModal
+            isShow={showRegenerationModal}
+            onConfirm={onConfirmRegeneration}
+            onCancel={onCancelRegeneration}
+            onClose={onCancelRegeneration}
+          />
+        )
+      }
     </div>
   )
 }
diff --git a/web/app/components/datasets/documents/detail/new-segment.tsx b/web/app/components/datasets/documents/detail/new-segment.tsx
index ae88900cf3..2806ffbcb1 100644
--- a/web/app/components/datasets/documents/detail/new-segment.tsx
+++ b/web/app/components/datasets/documents/detail/new-segment.tsx
@@ -5,7 +5,8 @@ import { useContext } from 'use-context-selector'
 import { useParams } from 'next/navigation'
 import { RiCloseLine, RiExpandDiagonalLine } from '@remixicon/react'
 import { useShallow } from 'zustand/react/shallow'
-import { SegmentIndexTag, useSegmentListContext } from './completed'
+import { useSegmentListContext } from './completed'
+import { SegmentIndexTag } from './completed/common/segment-index-tag'
 import ActionButtons from './completed/common/action-buttons'
 import Keywords from './completed/common/keywords'
 import ChunkContent from './completed/common/chunk-content'
@@ -41,7 +42,7 @@ const NewSegmentModal: FC<NewSegmentModalProps> = ({
   const [loading, setLoading] = useState(false)
   const [addAnother, setAddAnother] = useState(true)
   const [fullScreen, toggleFullScreen] = useSegmentListContext(s => [s.fullScreen, s.toggleFullScreen])
-  const [mode] = useDocumentContext(s => s.mode)
+  const mode = useDocumentContext(s => s.mode)
   const { appSidebarExpand } = useAppStore(useShallow(state => ({
     appSidebarExpand: state.appSidebarExpand,
   })))
diff --git a/web/app/components/datasets/formatted-text/flavours/edit-slice.tsx b/web/app/components/datasets/formatted-text/flavours/edit-slice.tsx
index 13f109b5d7..1fe81180c4 100644
--- a/web/app/components/datasets/formatted-text/flavours/edit-slice.tsx
+++ b/web/app/components/datasets/formatted-text/flavours/edit-slice.tsx
@@ -70,7 +70,8 @@ export const EditSlice: FC<EditSliceProps> = (props) => {
             onMouseLeave={() => setDelBtnHover(false)}
           >
             <ActionButton
-              onClick={() => {
+              onClick={(e) => {
+                e.stopPropagation()
                 onDelete()
                 setDelBtnShow(false)
               }}
diff --git a/web/app/components/datasets/hit-testing/components/result-item.tsx b/web/app/components/datasets/hit-testing/components/result-item.tsx
index 35d9d1bdf9..a53bbdcd60 100644
--- a/web/app/components/datasets/hit-testing/components/result-item.tsx
+++ b/web/app/components/datasets/hit-testing/components/result-item.tsx
@@ -2,7 +2,7 @@
 import type { FC } from 'react'
 import React from 'react'
 import { useTranslation } from 'react-i18next'
-import { SegmentIndexTag } from '../../documents/detail/completed'
+import { SegmentIndexTag } from '../../documents/detail/completed/common/segment-index-tag'
 import type { HitTesting } from '@/models/datasets'
 import cn from '@/utils/classnames'
 type Props = {
diff --git a/web/app/components/datasets/hit-testing/hit-detail.tsx b/web/app/components/datasets/hit-testing/hit-detail.tsx
index 066e2238c8..e8b3dbd302 100644
--- a/web/app/components/datasets/hit-testing/hit-detail.tsx
+++ b/web/app/components/datasets/hit-testing/hit-detail.tsx
@@ -1,7 +1,7 @@
 import type { FC } from 'react'
 import React from 'react'
 import { useTranslation } from 'react-i18next'
-import { SegmentIndexTag } from '../documents/detail/completed'
+import { SegmentIndexTag } from '../documents/detail/completed/common/segment-index-tag'
 import s from '../documents/detail/completed/style.module.css'
 import cn from '@/utils/classnames'
 import type { SegmentDetailModel } from '@/models/datasets'
diff --git a/web/i18n/en-US/common.ts b/web/i18n/en-US/common.ts
index f2cef3f0c6..82fa6ce01e 100644
--- a/web/i18n/en-US/common.ts
+++ b/web/i18n/en-US/common.ts
@@ -44,6 +44,8 @@ const translation = {
     openInNewTab: 'Open in new tab',
     saveAndRegenerate: 'Save & Regenerate Child Chunks',
     close: 'Close',
+    viewMore: 'VIEW MORE',
+    regenerate: 'Regenerate',
   },
   errorMsg: {
     fieldRequired: '{{field}} is required',
diff --git a/web/i18n/en-US/dataset-documents.ts b/web/i18n/en-US/dataset-documents.ts
index 00eafb7a2e..e074054815 100644
--- a/web/i18n/en-US/dataset-documents.ts
+++ b/web/i18n/en-US/dataset-documents.ts
@@ -349,6 +349,7 @@ const translation = {
     newTextSegment: 'New Text Segment',
     newQaSegment: 'New Q&A Segment',
     addChunk: 'Add Chunk',
+    addChildChunk: 'Add Child Chunk',
     addAnother: 'Add another',
     delete: 'Delete this chunk ?',
     chunkAdded: '1 chunk added',
diff --git a/web/i18n/zh-Hans/common.ts b/web/i18n/zh-Hans/common.ts
index 7c74b08d73..1af56d0cfe 100644
--- a/web/i18n/zh-Hans/common.ts
+++ b/web/i18n/zh-Hans/common.ts
@@ -44,6 +44,8 @@ const translation = {
     openInNewTab: '在新标签页打开',
     saveAndRegenerate: '保存并重新生成子分段',
     close: '关闭',
+    viewMore: '查看更多',
+    regenerate: '重新生成',
   },
   errorMsg: {
     fieldRequired: '{{field}} 为必填项',
diff --git a/web/i18n/zh-Hans/dataset-documents.ts b/web/i18n/zh-Hans/dataset-documents.ts
index 18378c9154..e06ae3f628 100644
--- a/web/i18n/zh-Hans/dataset-documents.ts
+++ b/web/i18n/zh-Hans/dataset-documents.ts
@@ -347,6 +347,7 @@ const translation = {
     newTextSegment: '新文本分段',
     newQaSegment: '新问答分段',
     addChunk: '新增分段',
+    addChildChunk: '新增子分段',
     addAnother: '连续新增',
     delete: '删除这个分段？',
     chunkAdded: '新增一个分段',
diff --git a/web/models/datasets.ts b/web/models/datasets.ts
index 10495f19e7..921b72b545 100644
--- a/web/models/datasets.ts
+++ b/web/models/datasets.ts
@@ -624,7 +624,7 @@ export type ChildChunkDetail = {
   type: ChildChunkType
 }
 
-export type ChildSegmentResponse = {
+export type ChildSegmentsResponse = {
   data: ChildChunkDetail[]
   total: number
   total_pages: number
diff --git a/web/service/datasets.ts b/web/service/datasets.ts
index c19eaf2a5b..158b716764 100644
--- a/web/service/datasets.ts
+++ b/web/service/datasets.ts
@@ -25,8 +25,6 @@ import type {
   RelatedAppResponse,
   SegmentDetailModel,
   SegmentUpdater,
-  SegmentsQuery,
-  SegmentsResponse,
   createDocumentResponse,
 } from '@/models/datasets'
 import type { CreateKnowledgeBaseReq } from '@/app/components/datasets/external-knowledge-base/create/declarations'
@@ -180,19 +178,6 @@ export const modifyDocMetadata: Fetcher<CommonResponse, CommonDocReq & { body: {
 }
 
 // apis for segments in a document
-
-export const fetchSegments: Fetcher<SegmentsResponse, CommonDocReq & { params: SegmentsQuery }> = ({ datasetId, documentId, params }) => {
-  return get<SegmentsResponse>(`/datasets/${datasetId}/documents/${documentId}/segments`, { params })
-}
-
-export const enableSegment: Fetcher<CommonResponse, { datasetId: string; segmentId: string }> = ({ datasetId, segmentId }) => {
-  return patch<CommonResponse>(`/datasets/${datasetId}/segments/${segmentId}/enable`)
-}
-
-export const disableSegment: Fetcher<CommonResponse, { datasetId: string; segmentId: string }> = ({ datasetId, segmentId }) => {
-  return patch<CommonResponse>(`/datasets/${datasetId}/segments/${segmentId}/disable`)
-}
-
 export const updateSegment: Fetcher<{ data: SegmentDetailModel; doc_form: string }, { datasetId: string; documentId: string; segmentId: string; body: SegmentUpdater }> = ({ datasetId, documentId, segmentId, body }) => {
   return patch<{ data: SegmentDetailModel; doc_form: string }>(`/datasets/${datasetId}/documents/${documentId}/segments/${segmentId}`, { body })
 }
diff --git a/web/service/knowledge/use-segment.ts b/web/service/knowledge/use-segment.ts
index 65ae2c17d3..ec6763ce36 100644
--- a/web/service/knowledge/use-segment.ts
+++ b/web/service/knowledge/use-segment.ts
@@ -1,7 +1,7 @@
 import { useMutation, useQuery } from '@tanstack/react-query'
-import { del, get, patch } from '../base'
+import { del, get, patch, post } from '../base'
 import type { CommonResponse } from '@/models/common'
-import type { ChildSegmentResponse, SegmentsResponse } from '@/models/datasets'
+import type { ChildChunkDetail, ChildSegmentsResponse, SegmentsResponse } from '@/models/datasets'
 
 const NAME_SPACE = 'segment'
 
@@ -65,7 +65,7 @@ export const useDeleteSegment = () => {
   })
 }
 
-const useChildSegmentListKey = [NAME_SPACE, 'childChunkList']
+export const useChildSegmentListKey = [NAME_SPACE, 'childChunkList']
 
 export const useChildSegmentList = (
   payload: {
@@ -85,9 +85,29 @@ export const useChildSegmentList = (
   return useQuery({
     queryKey: [...useChildSegmentListKey, datasetId, documentId, segmentId, page, limit, keyword],
     queryFn: () => {
-      return get<ChildSegmentResponse>(`/datasets/${datasetId}/documents/${documentId}/segment/${segmentId}/child_chunks`, { params })
+      return get<ChildSegmentsResponse>(`/datasets/${datasetId}/documents/${documentId}/segment/${segmentId}/child_chunks`, { params })
     },
     enabled: !disable,
     initialData: disable ? { data: [], total: 0, page: 1, total_pages: 0, limit: 10 } : undefined,
   })
 }
+
+export const useDeleteChildSegment = () => {
+  return useMutation({
+    mutationKey: [NAME_SPACE, 'childChunk', 'delete'],
+    mutationFn: (payload: { datasetId: string; documentId: string; segmentId: string; childChunkId: string }) => {
+      const { datasetId, documentId, segmentId, childChunkId } = payload
+      return del<CommonResponse>(`/datasets/${datasetId}/documents/${documentId}/segment/${segmentId}/child_chunks/${childChunkId}`)
+    },
+  })
+}
+
+export const useAddChildSegment = () => {
+  return useMutation({
+    mutationKey: [NAME_SPACE, 'childChunk', 'add'],
+    mutationFn: (payload: { datasetId: string; documentId: string; segmentId: string; body: { content: string } }) => {
+      const { datasetId, documentId, segmentId, body } = payload
+      return post<{ data: ChildChunkDetail }>(`/datasets/${datasetId}/documents/${documentId}/segment/${segmentId}/child_chunks`, { body })
+    },
+  })
+}