diff --git a/web/app/dashboard/ai-workflows/_components/flowgram-node-renderer.tsx b/web/app/dashboard/ai-workflows/_components/flowgram-node-renderer.tsx
index 9f3fcf9..cb40de4 100644
--- a/web/app/dashboard/ai-workflows/_components/flowgram-node-renderer.tsx
+++ b/web/app/dashboard/ai-workflows/_components/flowgram-node-renderer.tsx
@@ -8,9 +8,11 @@ import {
 import { useLayoutEffect } from "react"
 
 import { cn } from "@/lib/utils"
+import { useWorkflowPortAdd } from "./workflow-port-add-context"
 
 export function FlowgramNodeRenderer(props: WorkflowNodeProps) {
   const { selected, node, form } = useNodeRender()
+  const requestPortAdd = useWorkflowPortAdd()
   const nodeType = String(node.flowNodeType ?? "")
 
   useLayoutEffect(() => {
@@ -33,6 +35,13 @@ export function FlowgramNodeRenderer(props: WorkflowNodeProps) {
       portPrimaryColor="#2575FC"
       portSecondaryColor="#c9cdd4"
       portBackgroundColor="#FFFFFF"
+      onPortClick={(port, event) => {
+        if (port.portType !== "output" || typeof event === "function") {
+          return
+        }
+        event.stopPropagation()
+        requestPortAdd?.({ port, event })
+      }}
     >
       {form?.render()}
     </WorkflowNodeRenderer>
diff --git a/web/app/dashboard/ai-workflows/_components/workflow-editor.tsx b/web/app/dashboard/ai-workflows/_components/workflow-editor.tsx
index b02dadb..605dd74 100644
--- a/web/app/dashboard/ai-workflows/_components/workflow-editor.tsx
+++ b/web/app/dashboard/ai-workflows/_components/workflow-editor.tsx
@@ -6,9 +6,11 @@ import {
   EditorRenderer,
   FreeLayoutEditorProvider,
   WorkflowDocument,
+  WorkflowLinesManager,
   WorkflowSelectService,
   type WorkflowJSON,
   type WorkflowNodeJSON,
+  type WorkflowPortEntity,
   useClientContext,
   usePlaygroundTools,
   useService,
@@ -24,7 +26,14 @@ import {
 } from "./workflow-branch-selection"
 import { WorkflowConfigPanel } from "./workflow-config-sidebar"
 import { WorkflowEditorToolbar } from "./workflow-editor-toolbar"
-import { WorkflowNodePalette } from "./workflow-node-palette"
+import {
+  WorkflowPortAddProvider,
+  type WorkflowPortAddRequest,
+} from "./workflow-port-add-context"
+import {
+  WorkflowPortNodeMenu,
+  type WorkflowPortNodeMenuState,
+} from "./workflow-port-node-menu"
 import {
   createWorkflowNodeFromSpec,
   deleteWorkflowNode,
@@ -190,8 +199,11 @@ function WorkflowEditorInner({
   const context = useClientContext()
   const playgroundTools = usePlaygroundTools()
   const workflowDocument = useService(WorkflowDocument)
+  const linesManager = useService(WorkflowLinesManager)
   const selectService = useService(WorkflowSelectService)
+  const editorRootRef = useRef<HTMLDivElement>(null)
   const [autoLayouting, setAutoLayouting] = useState(false)
+  const [nodeMenu, setNodeMenu] = useState<(WorkflowPortNodeMenuState & { port: WorkflowPortEntity }) | null>(null)
   const zoomPercent = `${Math.round(playgroundTools.zoom * 100)}%`
 
   useEffect(() => {
@@ -206,13 +218,37 @@ function WorkflowEditorInner({
     onDefinitionChange(context.document.toJSON() as AIWorkflowDefinition)
   }
 
-  const addNode = async (spec: AIWorkflowNodeSpec) => {
-    const nextNode = createWorkflowNodeFromSpec(spec, definition.nodes, nextNodePosition(definition))
+  const openNodeMenuFromPort = useCallback((request: WorkflowPortAddRequest) => {
+    const rootRect = editorRootRef.current?.getBoundingClientRect()
+    setNodeMenu({
+      port: request.port,
+      x: rootRect ? request.event.clientX - rootRect.left + 10 : request.event.clientX,
+      y: rootRect ? request.event.clientY - rootRect.top - 10 : request.event.clientY,
+    })
+  }, [])
+
+  const addNodeFromPort = async (spec: AIWorkflowNodeSpec) => {
+    if (!nodeMenu) {
+      return
+    }
+    const sourcePort = nodeMenu.port
+    const nextNode = createWorkflowNodeFromSpec(
+      spec,
+      context.document.toJSON().nodes ?? definition.nodes,
+      nextNodePositionFromPort(sourcePort)
+    )
     const created = workflowDocument.createWorkflowNodeByType(
       spec.type,
       nextNode.meta?.position,
       nextNode as WorkflowNodeJSON
     )
+    linesManager.createLine({
+      from: sourcePort.node.id,
+      fromPort: sourcePort.portID,
+      to: created.id,
+      toPort: "",
+    })
+    setNodeMenu(null)
     await selectService.selectNodeAndScrollToView(created)
     onSelectNode(created.id)
     emitCurrentDefinition()
@@ -264,15 +300,14 @@ function WorkflowEditorInner({
 
   return (
     <div
+      ref={editorRootRef}
       data-workflow-editor-root
       className="relative isolate h-full min-h-0 w-full flex-1 overflow-hidden border bg-[var(--g-editor-background)]"
     >
-      <WorkflowNodePalette nodeSpecs={nodeSpecs} onAddNode={addNode} />
-
       <div
         className={cn(
-          "absolute left-[17.5rem] top-3 z-50 max-w-[calc(100%-18.25rem)]",
-          selectedNodeId && "max-w-[calc(100%-41rem)]"
+          "absolute left-3 top-3 z-50 max-w-[calc(100%-1.5rem)]",
+          selectedNodeId && "max-w-[calc(100%-25rem)]"
         )}
       >
         <WorkflowEditorToolbar
@@ -302,7 +337,17 @@ function WorkflowEditorInner({
         />
       </div>
 
-      <EditorRenderer className="h-full w-full" />
+      <WorkflowPortAddProvider onRequestAdd={openNodeMenuFromPort}>
+        <EditorRenderer className="h-full w-full" />
+      </WorkflowPortAddProvider>
+
+      <WorkflowPortNodeMenu
+        open={Boolean(nodeMenu)}
+        position={nodeMenu}
+        nodeSpecs={nodeSpecs}
+        onSelect={(spec) => void addNodeFromPort(spec)}
+        onClose={() => setNodeMenu(null)}
+      />
 
       <WorkflowConfigPanel
         definition={definition}
@@ -318,11 +363,9 @@ function WorkflowEditorInner({
   )
 }
 
-function nextNodePosition(definition: AIWorkflowDefinition) {
-  if (definition.nodes.length === 0) {
-    return { x: 80, y: 80 }
+function nextNodePositionFromPort(port: WorkflowPortEntity) {
+  return {
+    x: port.point.x + 120,
+    y: port.point.y - 40,
   }
-  const maxX = Math.max(...definition.nodes.map((node) => node.meta?.position?.x ?? 0))
-  const minY = Math.min(...definition.nodes.map((node) => node.meta?.position?.y ?? 80))
-  return { x: maxX + 320, y: Number.isFinite(minY) ? minY : 80 }
 }
diff --git a/web/app/dashboard/ai-workflows/_components/workflow-node-palette.tsx b/web/app/dashboard/ai-workflows/_components/workflow-node-palette.tsx
deleted file mode 100644
index 2053bb3..0000000
--- a/web/app/dashboard/ai-workflows/_components/workflow-node-palette.tsx
+++ /dev/null
@@ -1,38 +0,0 @@
-"use client"
-
-import type { AIWorkflowNodeSpec } from "@/lib/api/admin"
-import { WorkflowNodeIcon } from "./workflow-node-icon"
-
-export function WorkflowNodePalette({
-  nodeSpecs,
-  onAddNode,
-}: {
-  nodeSpecs: AIWorkflowNodeSpec[]
-  onAddNode: (spec: AIWorkflowNodeSpec) => void
-}) {
-  return (
-    <aside className="absolute left-3 top-3 z-50 flex max-h-[calc(100%-1.5rem)] w-64 shrink-0 flex-col overflow-hidden rounded-md border bg-background/95 shadow-sm backdrop-blur">
-      <div className="border-b px-3 py-2">
-        <div className="text-xs font-medium text-muted-foreground">节点</div>
-      </div>
-      <div className="min-h-0 flex-1 overflow-y-auto p-1.5">
-        <div className="space-y-1">
-          {nodeSpecs.map((spec) => (
-            <button
-              key={spec.type}
-              type="button"
-              className="flex w-full items-start gap-2 rounded-md px-2 py-2 text-left text-sm transition-colors hover:bg-muted"
-              onClick={() => onAddNode(spec)}
-            >
-              <WorkflowNodeIcon icon={spec.icon} size="sm" className="mt-0.5" />
-              <span className="min-w-0">
-                <span className="block truncate font-medium">{spec.title || spec.type}</span>
-                <span className="line-clamp-2 text-xs text-muted-foreground">{spec.description}</span>
-              </span>
-            </button>
-          ))}
-        </div>
-      </div>
-    </aside>
-  )
-}
diff --git a/web/app/dashboard/ai-workflows/_components/workflow-port-add-context.tsx b/web/app/dashboard/ai-workflows/_components/workflow-port-add-context.tsx
new file mode 100644
index 0000000..96e9ec6
--- /dev/null
+++ b/web/app/dashboard/ai-workflows/_components/workflow-port-add-context.tsx
@@ -0,0 +1,30 @@
+"use client"
+
+import { createContext, useContext } from "react"
+
+import type { WorkflowPortEntity } from "@flowgram.ai/free-layout-editor"
+
+export type WorkflowPortAddRequest = {
+  port: WorkflowPortEntity
+  event: React.MouseEvent<HTMLDivElement>
+}
+
+const WorkflowPortAddContext = createContext<((request: WorkflowPortAddRequest) => void) | null>(null)
+
+export function WorkflowPortAddProvider({
+  onRequestAdd,
+  children,
+}: {
+  onRequestAdd: (request: WorkflowPortAddRequest) => void
+  children: React.ReactNode
+}) {
+  return (
+    <WorkflowPortAddContext.Provider value={onRequestAdd}>
+      {children}
+    </WorkflowPortAddContext.Provider>
+  )
+}
+
+export function useWorkflowPortAdd() {
+  return useContext(WorkflowPortAddContext)
+}
diff --git a/web/app/dashboard/ai-workflows/_components/workflow-port-node-menu.tsx b/web/app/dashboard/ai-workflows/_components/workflow-port-node-menu.tsx
new file mode 100644
index 0000000..cabb517
--- /dev/null
+++ b/web/app/dashboard/ai-workflows/_components/workflow-port-node-menu.tsx
@@ -0,0 +1,100 @@
+"use client"
+
+import { useEffect, useMemo, useRef } from "react"
+
+import type { AIWorkflowNodeSpec } from "@/lib/api/admin"
+import { WorkflowNodeIcon } from "./workflow-node-icon"
+
+export type WorkflowPortNodeMenuState = {
+  x: number
+  y: number
+}
+
+export function WorkflowPortNodeMenu({
+  open,
+  position,
+  nodeSpecs,
+  onSelect,
+  onClose,
+}: {
+  open: boolean
+  position: WorkflowPortNodeMenuState | null
+  nodeSpecs: AIWorkflowNodeSpec[]
+  onSelect: (spec: AIWorkflowNodeSpec) => void
+  onClose: () => void
+}) {
+  const menuRef = useRef<HTMLDivElement>(null)
+  const insertableNodeSpecs = useMemo(
+    () => nodeSpecs.filter((spec) => spec.type !== "start"),
+    [nodeSpecs]
+  )
+
+  useEffect(() => {
+    if (!open) {
+      return
+    }
+    const closeOnPointerDown = (event: PointerEvent) => {
+      const target = event.target
+      if (target instanceof Node && menuRef.current?.contains(target)) {
+        return
+      }
+      onClose()
+    }
+    const closeOnEscape = (event: KeyboardEvent) => {
+      if (event.key === "Escape") {
+        onClose()
+      }
+    }
+    window.addEventListener("pointerdown", closeOnPointerDown)
+    window.addEventListener("keydown", closeOnEscape)
+    return () => {
+      window.removeEventListener("pointerdown", closeOnPointerDown)
+      window.removeEventListener("keydown", closeOnEscape)
+    }
+  }, [onClose, open])
+
+  if (!open || !position) {
+    return null
+  }
+
+  return (
+    <div
+      ref={menuRef}
+      className="pointer-events-auto absolute z-[80] w-64 overflow-hidden rounded-lg border border-slate-200 bg-white py-1.5 shadow-[0_14px_35px_rgba(15,23,42,0.16)]"
+      style={{
+        left: position.x,
+        top: position.y,
+      }}
+      onPointerDown={(event) => event.stopPropagation()}
+    >
+      <div className="border-b border-slate-100 px-3 pb-2 pt-1 text-xs font-medium text-slate-500">
+        添加节点
+      </div>
+      <div className="max-h-80 overflow-y-auto p-1.5">
+        {insertableNodeSpecs.map((spec) => (
+          <button
+            key={spec.type}
+            type="button"
+            className="flex w-full items-start gap-2 rounded-md px-2 py-2 text-left text-sm transition-colors hover:bg-slate-50"
+            onClick={(event) => {
+              event.stopPropagation()
+              onSelect(spec)
+            }}
+          >
+            <WorkflowNodeIcon icon={spec.icon} size="sm" className="mt-0.5" />
+            <span className="min-w-0">
+              <span className="block truncate font-medium text-slate-900">
+                {spec.title || spec.type}
+              </span>
+              {spec.description ? (
+                <span className="line-clamp-2 text-xs text-slate-500">
+                  {spec.description}
+                </span>
+              ) : null}
+            </span>
+          </button>
+        ))}
+      </div>
+    </div>
+  )
+}