diff --git a/web/app/components/workflow/comment/icon.tsx b/web/app/components/workflow/comment/icon.tsx
index 3aecc7976d..20da86e606 100644
--- a/web/app/components/workflow/comment/icon.tsx
+++ b/web/app/components/workflow/comment/icon.tsx
@@ -1,5 +1,6 @@
 import type { FC } from 'react'
-import { memo } from 'react'
+import { memo, useMemo } from 'react'
+import { useReactFlow, useViewport } from 'reactflow'
 import Avatar from '@/app/components/base/avatar'
 import type { WorkflowCommentList } from '@/service/workflow-comment'
 
@@ -9,12 +10,22 @@ type CommentIconProps = {
 }
 
 export const CommentIcon: FC<CommentIconProps> = memo(({ comment, onClick }) => {
+  const { flowToScreenPosition } = useReactFlow()
+  const viewport = useViewport()
+
+  const screenPosition = useMemo(() => {
+    return flowToScreenPosition({
+      x: comment.position_x,
+      y: comment.position_y,
+    })
+  }, [comment.position_x, comment.position_y, viewport.x, viewport.y, viewport.zoom, flowToScreenPosition])
+
   return (
     <div
-      className="absolute z-40 cursor-pointer"
+      className="absolute z-10 cursor-pointer"
       style={{
-        left: comment.position_x,
-        top: comment.position_y,
+        left: screenPosition.x,
+        top: screenPosition.y,
         transform: 'translate(-50%, -50%)',
       }}
       onClick={onClick}
@@ -24,7 +35,7 @@ export const CommentIcon: FC<CommentIconProps> = memo(({ comment, onClick }) =>
           <div className="flex h-full w-full items-center justify-center">
             <div className="h-10 w-10 overflow-hidden rounded-full">
               <Avatar
-                avatar={comment.created_by_account.avatar_url}
+                avatar={comment.created_by_account.avatar_url || null}
                 name={comment.created_by_account.name}
                 size={40}
                 className="h-full w-full"
@@ -35,6 +46,13 @@ export const CommentIcon: FC<CommentIconProps> = memo(({ comment, onClick }) =>
       </div>
     </div>
   )
+}, (prevProps, nextProps) => {
+  return (
+    prevProps.comment.id === nextProps.comment.id
+    && prevProps.comment.position_x === nextProps.comment.position_x
+    && prevProps.comment.position_y === nextProps.comment.position_y
+    && prevProps.onClick === nextProps.onClick
+  )
 })
 
 CommentIcon.displayName = 'CommentIcon'
diff --git a/web/app/components/workflow/comment/input.tsx b/web/app/components/workflow/comment/input.tsx
index 956cb884b0..8d12173fa3 100644
--- a/web/app/components/workflow/comment/input.tsx
+++ b/web/app/components/workflow/comment/input.tsx
@@ -1,7 +1,8 @@
 import type { FC } from 'react'
-import { memo, useCallback, useEffect, useRef, useState } from 'react'
+import { memo, useCallback, useEffect, useMemo, useRef, useState } from 'react'
 import Textarea from 'react-textarea-autosize'
 import { RiSendPlane2Fill } from '@remixicon/react'
+import { useReactFlow, useViewport } from 'reactflow'
 import cn from '@/utils/classnames'
 import Button from '@/app/components/base/button'
 import Avatar from '@/app/components/base/avatar'
@@ -17,6 +18,12 @@ export const CommentInput: FC<CommentInputProps> = memo(({ position, onSubmit, o
   const [content, setContent] = useState('')
   const textareaRef = useRef<HTMLTextAreaElement>(null)
   const { userProfile } = useAppContext()
+  const { flowToScreenPosition } = useReactFlow()
+  const viewport = useViewport()
+
+  const screenPosition = useMemo(() => {
+    return flowToScreenPosition(position)
+  }, [position.x, position.y, viewport.x, viewport.y, viewport.zoom, flowToScreenPosition])
 
   useEffect(() => {
     const handleGlobalKeyDown = (e: KeyboardEvent) => {
@@ -59,8 +66,8 @@ export const CommentInput: FC<CommentInputProps> = memo(({ position, onSubmit, o
     <div
       className="absolute z-50 w-96"
       style={{
-        left: position.x + 10,
-        top: position.y + 10,
+        left: screenPosition.x,
+        top: screenPosition.y,
       }}
     >
       <div className="flex items-start gap-3">
diff --git a/web/app/components/workflow/hooks/use-workflow-comment.ts b/web/app/components/workflow/hooks/use-workflow-comment.ts
index 97cf8ac582..f8020de8eb 100644
--- a/web/app/components/workflow/hooks/use-workflow-comment.ts
+++ b/web/app/components/workflow/hooks/use-workflow-comment.ts
@@ -1,21 +1,22 @@
 import { useCallback, useEffect, useState } from 'react'
 import { useParams } from 'next/navigation'
+import { useReactFlow } from 'reactflow'
 import { useStore } from '../store'
 import { ControlMode } from '../types'
-import type { WorkflowComment } from '@/service/workflow-comment'
+import type { WorkflowCommentList } from '@/service/workflow-comment'
 import { createWorkflowComment, fetchWorkflowComments } from '@/service/workflow-comment'
 
 export const useWorkflowComment = () => {
   const params = useParams()
   const appId = params.appId as string
+  const reactflow = useReactFlow()
   const controlMode = useStore(s => s.controlMode)
   const setControlMode = useStore(s => s.setControlMode)
   const pendingComment = useStore(s => s.pendingComment)
   const setPendingComment = useStore(s => s.setPendingComment)
-  const [comments, setComments] = useState<WorkflowComment[]>([])
+  const [comments, setComments] = useState<WorkflowCommentList[]>([])
   const [loading, setLoading] = useState(false)
 
-  // 加载评论列表
   const loadComments = useCallback(async () => {
     if (!appId) return
 
@@ -32,7 +33,6 @@ export const useWorkflowComment = () => {
     }
   }, [appId])
 
-  // 初始化时加载评论
   useEffect(() => {
     loadComments()
   }, [loadComments])
@@ -56,47 +56,39 @@ export const useWorkflowComment = () => {
       })
 
       console.log('Comment created successfully:', newComment)
-      setComments(prev => [...prev, newComment])
+      await loadComments()
       setPendingComment(null)
       setControlMode(ControlMode.Pointer)
     }
- catch (error) {
+    catch (error) {
       console.error('Failed to create comment:', error)
       setPendingComment(null)
       setControlMode(ControlMode.Pointer)
     }
-  }, [appId, pendingComment, setControlMode, setPendingComment, setComments])
+  }, [appId, pendingComment, setControlMode, setPendingComment, loadComments])
 
   const handleCommentCancel = useCallback(() => {
     setPendingComment(null)
     setControlMode(ControlMode.Pointer)
   }, [setControlMode, setPendingComment])
 
-  const handleCommentIconClick = useCallback((comment: WorkflowComment) => {
+  const handleCommentIconClick = useCallback((comment: WorkflowCommentList) => {
     // TODO: display comment details
     console.log('Comment clicked:', comment)
   }, [])
 
   const handleCreateComment = useCallback((mousePosition: { pageX: number; pageY: number }) => {
     if (controlMode === ControlMode.Comment) {
-      const containerElement = document.querySelector('#workflow-container')
-      if (containerElement) {
-        const containerBounds = containerElement.getBoundingClientRect()
-        const position = {
-          x: mousePosition.pageX - containerBounds.left,
-          y: mousePosition.pageY - containerBounds.top,
-        }
-        console.log('Setting pending comment at position:', position)
-        setPendingComment(position)
-      }
- else {
-        console.error('Could not find workflow container element')
-      }
+      const { screenToFlowPosition } = reactflow
+      const flowPosition = screenToFlowPosition({ x: mousePosition.pageX, y: mousePosition.pageY })
+
+      console.log('Setting pending comment at flow position:', flowPosition)
+      setPendingComment(flowPosition)
     }
- else {
+    else {
       console.log('Control mode is not Comment:', controlMode)
     }
-  }, [controlMode, setPendingComment])
+  }, [controlMode, setPendingComment, reactflow])
 
   return {
     comments,