diff --git a/client/src/components/ChatBox/index.tsx b/client/src/components/ChatBox/index.tsx
index 3ed732858..c7936e5b3 100644
--- a/client/src/components/ChatBox/index.tsx
+++ b/client/src/components/ChatBox/index.tsx
@@ -38,7 +38,7 @@ import { fileDownload } from '@/utils/file';
 import { htmlTemplate } from '@/constants/common';
 import { useRouter } from 'next/router';
 import { useGlobalStore } from '@/store/global';
-import { TaskResponseKeyEnum } from '@/constants/chat';
+import { TaskResponseKeyEnum, getDefaultChatVariables } from '@/constants/chat';
 
 import MyIcon from '@/components/Icon';
 import Avatar from '@/components/Avatar';
@@ -251,7 +251,7 @@ const ChatBox = (
    * user confirm send prompt
    */
   const sendPrompt = useCallback(
-    async (data: Record<string, any> = {}, inputVal = '') => {
+    async (variables: Record<string, any> = {}, inputVal = '') => {
       if (isChatting) {
         toast({
           title: '正在聊天中...请等待结束',
@@ -306,7 +306,10 @@ const ChatBox = (
           messages,
           controller: abortSignal,
           generatingMessage,
-          variables: data
+          variables: {
+            ...getDefaultChatVariables(),
+            ...variables
+          }
         });
 
         // set finish status
diff --git a/client/src/constants/chat.ts b/client/src/constants/chat.ts
index 9a64defee..b51b5f619 100644
--- a/client/src/constants/chat.ts
+++ b/client/src/constants/chat.ts
@@ -1,3 +1,5 @@
+import dayjs from 'dayjs';
+
 export enum sseResponseEventEnum {
   error = 'error',
   answer = 'answer',
@@ -65,3 +67,7 @@ export enum OutLinkTypeEnum {
 
 export const HUMAN_ICON = `https://fastgpt.run/icon/human.png`;
 export const LOGO_ICON = `https://fastgpt.run/icon/logo.png`;
+
+export const getDefaultChatVariables = () => ({
+  cTime: dayjs().format('YYYY/MM/DD HH:mm:ss')
+});
diff --git a/client/src/constants/flow/ModuleTemplate.ts b/client/src/constants/flow/ModuleTemplate.ts
index 0c4ff410e..f2a3c868d 100644
--- a/client/src/constants/flow/ModuleTemplate.ts
+++ b/client/src/constants/flow/ModuleTemplate.ts
@@ -30,7 +30,7 @@ export const VariableModule: FlowModuleTemplateType = {
   name: '全局变量',
   intro: '可以在对话开始前，要求用户填写一些内容作为本轮对话的变量。该模块位于开场引导之后。',
   description:
-    '全局变量可以通过 {{变量key}} 的形式注入到其他模块的文本中。目前支持：提示词、限定词。',
+    '全局变量可以通过 {{变量key}} 的形式注入到其他模块 string 类型的输入中，例如：提示词、限定词等',
   flowType: FlowModuleTypeEnum.variable,
   inputs: [
     {
@@ -389,6 +389,7 @@ export const ContextExtractModule: FlowModuleTemplateType = {
       valueType: FlowValueTypeEnum.string,
       label: '提取要求描述',
       description: '写一段提取要求，告诉 AI 需要提取哪些内容',
+      required: true,
       placeholder:
         '例如: \n1. 你是一个实验室预约助手。根据用户问题，提取出姓名、实验室号和预约时间',
       value: ''
@@ -433,8 +434,8 @@ export const ContextExtractModule: FlowModuleTemplateType = {
     {
       key: ContextExtractEnum.fields,
       label: '完整提取结果',
-      description: '一个 JSON 对象，例如 {"name:":"YY","Time":"2023/7/2 18:00"}',
-      valueType: FlowValueTypeEnum.any,
+      description: '一个 JSON 字符串，例如：{"name:":"YY","Time":"2023/7/2 18:00"}',
+      valueType: FlowValueTypeEnum.string,
       type: FlowOutputItemTypeEnum.source,
       targets: []
     },
diff --git a/client/src/pages/app/detail/components/AdEdit/components/Nodes/NodeExtract.tsx b/client/src/pages/app/detail/components/AdEdit/components/Nodes/NodeExtract.tsx
index f4d71cef3..4eaf07273 100644
--- a/client/src/pages/app/detail/components/AdEdit/components/Nodes/NodeExtract.tsx
+++ b/client/src/pages/app/detail/components/AdEdit/components/Nodes/NodeExtract.tsx
@@ -16,7 +16,7 @@ import { ContextExtractEnum } from '@/constants/flow/flowField';
 import { FlowOutputItemTypeEnum, FlowValueTypeEnum } from '@/constants/flow';
 
 const NodeExtract = ({
-  data: { inputs, outputs, moduleId, onChangeNode, ...props }
+  data: { inputs, outputs, moduleId, onChangeNode, onDelEdge, ...props }
 }: NodeProps<FlowModuleItemType>) => {
   const { t } = useTranslation();
   const [editExtractFiled, setEditExtractField] = useState<ContextExtractAgentItemType>();
@@ -105,6 +105,7 @@ const NodeExtract = ({
                                   key: '',
                                   value: newOutputVal
                                 });
+                                onDelEdge({ moduleId, sourceHandle: item.key });
                               }}
                             />
                           </Td>
@@ -168,6 +169,10 @@ const NodeExtract = ({
               value: newOutputs
             });
 
+            if (editExtractFiled.key && editExtractFiled.key !== data.key) {
+              onDelEdge({ moduleId, sourceHandle: editExtractFiled.key });
+            }
+
             setEditExtractField(undefined);
           }}
         />
diff --git a/client/src/pages/app/detail/components/AdEdit/index.tsx b/client/src/pages/app/detail/components/AdEdit/index.tsx
index 3a47c4afe..6761996bf 100644
--- a/client/src/pages/app/detail/components/AdEdit/index.tsx
+++ b/client/src/pages/app/detail/components/AdEdit/index.tsx
@@ -162,7 +162,6 @@ const AppEdit = ({ app, fullScreen, onFullScreen }: Props) => {
     });
     return modules;
   }, [edges, nodes]);
-
   const onChangeNode = useCallback(
     ({ moduleId, key, type = 'inputs', value, valueKey = 'value' }: FlowModuleItemChangeProps) => {
       setNodes((nodes) =>
@@ -205,6 +204,29 @@ const AppEdit = ({ app, fullScreen, onFullScreen }: Props) => {
     },
     [setEdges, setNodes]
   );
+  const onDelEdge = useCallback(
+    ({
+      moduleId,
+      sourceHandle,
+      targetHandle
+    }: {
+      moduleId: string;
+      sourceHandle?: string;
+      targetHandle?: string;
+    }) => {
+      if (!sourceHandle && !targetHandle) return;
+      setEdges((state) =>
+        state.filter((edge) => {
+          if (edge.source === moduleId && edge.sourceHandle === sourceHandle) return false;
+          if (edge.target === moduleId && edge.targetHandle === targetHandle) return false;
+
+          return true;
+        })
+      );
+    },
+    [setEdges]
+  );
+
   const onAddNode = useCallback(
     ({ template, position }: { template: FlowModuleTemplateType; position: XYPosition }) => {
       if (!reactFlowWrapper.current) return;
@@ -221,12 +243,13 @@ const AppEdit = ({ app, fullScreen, onFullScreen }: Props) => {
               position: { x: mouseX, y: mouseY }
             },
             onChangeNode,
-            onDelNode
+            onDelNode,
+            onDelEdge
           })
         )
       );
     },
-    [onChangeNode, onDelNode, setNodes, x, y, zoom]
+    [onDelEdge, onChangeNode, onDelNode, setNodes, x, y, zoom]
   );
   const onDelConnect = useCallback(
     (id: string) => {
@@ -309,14 +332,15 @@ const AppEdit = ({ app, fullScreen, onFullScreen }: Props) => {
           appModule2FlowNode({
             item,
             onChangeNode,
-            onDelNode
+            onDelNode,
+            onDelEdge
           })
         )
       );
 
       onFixView();
     },
-    [onDelConnect, setEdges, setNodes, onFixView, onChangeNode, onDelNode]
+    [onDelConnect, setEdges, setNodes, onFixView, onChangeNode, onDelNode, onDelEdge]
   );
 
   useEffect(() => {
diff --git a/client/src/service/moduleDispatch/agent/extract.ts b/client/src/service/moduleDispatch/agent/extract.ts
index c364ce6d1..7a5ea90eb 100644
--- a/client/src/service/moduleDispatch/agent/extract.ts
+++ b/client/src/service/moduleDispatch/agent/extract.ts
@@ -19,7 +19,7 @@ export type Props = {
 export type Response = {
   [ContextExtractEnum.success]?: boolean;
   [ContextExtractEnum.failed]?: boolean;
-  [ContextExtractEnum.fields]: Record<string, any>;
+  [ContextExtractEnum.fields]: string;
   [TaskResponseKeyEnum.responseData]: ChatHistoryItemResType;
 };
 
@@ -115,7 +115,7 @@ export async function dispatchContentExtract({
   return {
     [ContextExtractEnum.success]: success ? true : undefined,
     [ContextExtractEnum.failed]: success ? undefined : true,
-    [ContextExtractEnum.fields]: arg,
+    [ContextExtractEnum.fields]: JSON.stringify(arg),
     ...arg,
     [TaskResponseKeyEnum.responseData]: {
       moduleName: ChatModuleEnum.Extract,
diff --git a/client/src/types/flow.d.ts b/client/src/types/flow.d.ts
index 6ed9df9d6..085888e16 100644
--- a/client/src/types/flow.d.ts
+++ b/client/src/types/flow.d.ts
@@ -59,4 +59,13 @@ export type FlowModuleItemType = FlowModuleTemplateType & {
   moduleId: string;
   onChangeNode: (e: FlowModuleItemChangeProps) => void;
   onDelNode: (id: string) => void;
+  onDelEdge: ({
+    moduleId,
+    sourceHandle,
+    targetHandle
+  }: {
+    moduleId: string;
+    sourceHandle?: string | undefined;
+    targetHandle?: string | undefined;
+  }) => void;
 };
diff --git a/client/src/utils/adapt.ts b/client/src/utils/adapt.ts
index bf0c54050..eb5460b51 100644
--- a/client/src/utils/adapt.ts
+++ b/client/src/utils/adapt.ts
@@ -63,11 +63,13 @@ export const textAdaptGptResponse = ({
 export const appModule2FlowNode = ({
   item,
   onChangeNode,
-  onDelNode
+  onDelNode,
+  onDelEdge
 }: {
   item: AppModuleItemType;
   onChangeNode: FlowModuleItemType['onChangeNode'];
   onDelNode: FlowModuleItemType['onDelNode'];
+  onDelEdge: FlowModuleItemType['onDelEdge'];
 }): Node<FlowModuleItemType> => {
   // init some static data
   const template =
@@ -96,7 +98,8 @@ export const appModule2FlowNode = ({
       };
     }),
     onChangeNode,
-    onDelNode
+    onDelNode,
+    onDelEdge
   };
 
   return {