diff --git a/web/src/components/ModelSelect/index.tsx b/web/src/components/ModelSelect/index.tsx
index 8f9152fb..85977376 100644
--- a/web/src/components/ModelSelect/index.tsx
+++ b/web/src/components/ModelSelect/index.tsx
@@ -2,9 +2,9 @@
  * @Author: ZhaoYing 
  * @Date: 2026-03-07 16:49:59 
  * @Last Modified by: ZhaoYing
- * @Last Modified time: 2026-03-25 11:21:59
+ * @Last Modified time: 2026-04-17 10:11:54
  */
-import { useEffect, useState, type FC } from 'react';
+import { type FC, useEffect, useState } from 'react';
 import { Select, Flex, Space } from 'antd';
 import type { SelectProps } from 'antd/es/select';
 import { useTranslation } from 'react-i18next';
@@ -22,16 +22,10 @@ interface ModelSelectProps extends SelectProps {
   fontClassName?: string;
   isAutoFetch?: boolean;
   initialData?: Model[];
+  updateOptions?: (options: Model[]) => void;
 }
 
-const ModelSelect: FC<ModelSelectProps> = ({
-  params,
-  placeholder,
-  fontClassName,
-  isAutoFetch = true,
-  initialData = [],
-  ...props
-}) => {
+const ModelSelect: FC<ModelSelectProps> = ({ params, placeholder, fontClassName, isAutoFetch = true, initialData = [], updateOptions, ...props }) => {
   const { t } = useTranslation();
   const [options, setOptions] = useState<Model[]>([]);
 
@@ -60,6 +54,10 @@ const ModelSelect: FC<ModelSelectProps> = ({
     );
   };
 
+  useEffect(() => {
+    if (updateOptions) updateOptions([...options, ...initialData]);
+  }, [options, initialData])
+
   return (
     <Select
       placeholder={placeholder ?? t('common.pleaseSelect')}
diff --git a/web/src/i18n/en.ts b/web/src/i18n/en.ts
index 394606a3..d65e4436 100644
--- a/web/src/i18n/en.ts
+++ b/web/src/i18n/en.ts
@@ -629,6 +629,7 @@ export const en = {
       video: 'Video',
       thinking: 'Deep Thinking',
       is_thinking: 'Deep Thinking Support',
+      json_output: 'Support JSON formatted output',
     },
     knowledgeBase: {
       home: 'Home',
@@ -1524,6 +1525,7 @@ export const en = {
 }`,
       uploadCover: 'Import and Overwrite',
       refresh: 'Refresh Current Page',
+      json_output: 'Support JSON formatted output',
     },
     userMemory: {
       userMemory: 'User Memory',
@@ -2287,6 +2289,7 @@ Memory Bear: After the rebellion, regional warlordism intensified for several re
           messagesPlaceholder: 'Write prompts here, type "{" to insert variables, type "insert" to insert',
           vision: 'Vision',
           parameterSettings: 'Parameter Settings',
+          json_output: 'Support JSON formatted output',
         },
         start: {
           variables: 'Input Fields',
diff --git a/web/src/i18n/zh.ts b/web/src/i18n/zh.ts
index 98676ef4..921b3554 100644
--- a/web/src/i18n/zh.ts
+++ b/web/src/i18n/zh.ts
@@ -859,6 +859,7 @@ export const zh = {
 }`,
       uploadCover: '导入并覆盖',
       refresh: '刷新当前页',
+      json_output: '支持JSON格式化输出',
     },
     table: {
       totalRecords: '共 {{total}} 条记录'
@@ -1307,6 +1308,7 @@ export const zh = {
       video: '视频',
       thinking: '深度思考',
       is_thinking: '支持深度思考',
+      json_output: '支持JSON格式化输出',
     },
     timezones: {
       'Asia/Shanghai': '中国标准时间 (UTC+8)',
@@ -2248,6 +2250,7 @@ export const zh = {
           messagesPlaceholder: '在此处编写提示，输入“{”插入变量，输入“insert”插入',
           vision: '视觉',
           parameterSettings: '参数设置',
+          json_output: '支持JSON格式化输出',
         },
         start: {
           variables: '输入字段',
diff --git a/web/src/views/ApplicationConfig/components/ModelConfigModal.tsx b/web/src/views/ApplicationConfig/components/ModelConfigModal.tsx
index 8e3e3257..30af7a8c 100644
--- a/web/src/views/ApplicationConfig/components/ModelConfigModal.tsx
+++ b/web/src/views/ApplicationConfig/components/ModelConfigModal.tsx
@@ -2,7 +2,7 @@
  * @Author: ZhaoYing 
  * @Date: 2026-02-03 16:28:07 
  * @Last Modified by: ZhaoYing
- * @Last Modified time: 2026-03-31 16:56:57
+ * @Last Modified time: 2026-04-16 18:51:01
  */
 /**
  * Model Configuration Modal
@@ -102,14 +102,15 @@ const ModelConfigModal = forwardRef<ModelConfigModalRef, ModelConfigModalProps>(
   }
   /** Handle model selection change */
   const handleChange: SelectProps['onChange'] = (_value, option) => {
-    if (source === 'chat') {
-      form.setFieldValue('label', (option as Model).name)
-    }
-
-    form.setFieldsValue({
+    const newValues: ModelConfig = {
       capability: (option as Model).capability,
       deep_thinking: false,
-    })
+      json_output: false
+    }
+    if (source === 'chat') {
+      newValues.label = (option as Model).name
+    }
+    form.setFieldsValue(newValues)
   }
 
   /** Expose methods to parent component */
@@ -119,12 +120,10 @@ const ModelConfigModal = forwardRef<ModelConfigModalRef, ModelConfigModalProps>(
   }));
 
   useEffect(() => {
-    const { deep_thinking: _, ...rest } = data?.model_parameters || {}
+    const { deep_thinking: _, json_output: __, ...rest } = data?.model_parameters || {}
     form.setFieldsValue(rest)
   }, [values?.default_model_config_id])
 
-
-  console.log('handleChange values', values)
   return (
     <RbModal
       title={t('application.modelConfig')}
@@ -159,6 +158,9 @@ const ModelConfigModal = forwardRef<ModelConfigModalRef, ModelConfigModalProps>(
         <FormItem name="deep_thinking" valuePropName="checked" hidden={!['model', 'chat'].includes(source) || !(values?.deep_thinking || values?.capability?.includes('thinking'))}>
           <Checkbox>{t('application.deep_thinking')}</Checkbox>
         </FormItem>
+        <FormItem name="json_output" valuePropName="checked" hidden={!(values?.capability?.includes('json_output'))}>
+          <Checkbox>{t('application.json_output')}</Checkbox>
+        </FormItem>
         {source === 'chat' && <FormItem name="label" hidden />}
 
 
diff --git a/web/src/views/ApplicationConfig/types.ts b/web/src/views/ApplicationConfig/types.ts
index 83c11791..3b2755a9 100644
--- a/web/src/views/ApplicationConfig/types.ts
+++ b/web/src/views/ApplicationConfig/types.ts
@@ -2,7 +2,7 @@
  * @Author: ZhaoYing 
  * @Date: 2026-02-03 16:29:49 
  * @Last Modified by: ZhaoYing
- * @Last Modified time: 2026-04-07 15:46:19
+ * @Last Modified time: 2026-04-16 18:20:14
  */
 import type { KnowledgeConfig } from './components/Knowledge/types'
 import type { Variable } from './components/VariableList/types'
@@ -24,20 +24,21 @@ export interface ModelConfig {
   default_model_config_id?: string;
   capability?: Capability[];
   /** Temperature for response randomness (0-2) */
-  temperature: number;
+  temperature?: number;
   /** Maximum tokens in response */
-  max_tokens: number;
+  max_tokens?: number;
   /** Top-p sampling parameter */
-  top_p: number;
+  top_p?: number;
   /** Frequency penalty */
-  frequency_penalty: number;
+  frequency_penalty?: number;
   /** Presence penalty */
-  presence_penalty: number;
+  presence_penalty?: number;
   /** Number of completions to generate */
-  n: number;
+  n?: number;
   /** Stop sequences */
   stop?: string;
   deep_thinking?: boolean;
+  json_output?: boolean;
 }
 
 /**
diff --git a/web/src/views/ModelManagement/components/CustomModelModal.tsx b/web/src/views/ModelManagement/components/CustomModelModal.tsx
index 01cc0fd6..89aaec78 100644
--- a/web/src/views/ModelManagement/components/CustomModelModal.tsx
+++ b/web/src/views/ModelManagement/components/CustomModelModal.tsx
@@ -2,7 +2,7 @@
  * @Author: ZhaoYing 
  * @Date: 2026-02-03 16:49:28 
  * @Last Modified by: ZhaoYing
- * @Last Modified time: 2026-03-31 13:56:18
+ * @Last Modified time: 2026-04-16 18:03:53
  */
 /**
  * Custom Model Modal
@@ -14,7 +14,7 @@ import { forwardRef, useEffect, useImperativeHandle, useState } from 'react';
 import { Form, Input, App, Checkbox, Button, Row, Col } from 'antd';
 import { useTranslation } from 'react-i18next';
 
-import type { CustomModelForm, ModelListItem, CustomModelModalRef, CustomModelModalProps } from '../types';
+import type { CustomModelForm, ModelListItem, CustomModelModalRef, CustomModelModalProps, Capability } from '../types';
 import RbModal from '@/components/RbModal'
 import CustomSelect from '@/components/CustomSelect'
 import UploadImages from '@/components/Upload/UploadImages'
@@ -73,6 +73,7 @@ const CustomModelModal = forwardRef<CustomModelModalRef, CustomModelModalProps>(
         is_video: capability?.includes('video') || false,
         is_audio: capability?.includes('audio') || false,
         is_thinking: capability?.includes('thinking') || false,
+        json_output: capability?.includes('json_output') || false,
       });
     } else {
       setIsEdit(false);
@@ -102,13 +103,13 @@ const CustomModelModal = forwardRef<CustomModelModalRef, CustomModelModalProps>(
     form
       .validateFields()
       .then((values) => {
-        const { logo, type, is_vision, is_video, is_audio, is_omni, is_thinking, ...rest } = values;
+        const { logo, type, is_vision, is_video, is_audio, is_omni, is_thinking, json_output, ...rest } = values;
         const formData: CustomModelForm = {
           ...rest,
           type,
         }
         if (!['embedding', 'rerank'].includes(type as string)) {
-          let capability = is_omni ? ["vision", "audio", 'video'] : []
+          let capability: Capability[] = is_omni ? ["vision", "audio", 'video'] : []
 
           if (!is_omni) {
             if (is_vision) {
@@ -124,6 +125,9 @@ const CustomModelModal = forwardRef<CustomModelModalRef, CustomModelModalProps>(
           if (is_thinking) {
             capability.push('thinking')
           }
+          if (json_output) {
+            capability.push('json_output')
+          }
 
           formData.capability = capability
           formData.is_omni = is_omni
@@ -269,6 +273,11 @@ const CustomModelModal = forwardRef<CustomModelModalRef, CustomModelModalProps>(
                 <Checkbox>{t('modelNew.is_thinking')}</Checkbox>
               </Form.Item>
             </Col>
+            <Col span={24}>
+              <Form.Item name="json_output" valuePropName="checked" className="rb:mb-0!">
+                <Checkbox>{t('modelNew.json_output')}</Checkbox>
+              </Form.Item>
+            </Col>
           </Row>
         }
       </Form>
diff --git a/web/src/views/ModelManagement/types.ts b/web/src/views/ModelManagement/types.ts
index cafac4b3..1fa6bd3d 100644
--- a/web/src/views/ModelManagement/types.ts
+++ b/web/src/views/ModelManagement/types.ts
@@ -2,7 +2,7 @@
  * @Author: ZhaoYing 
  * @Date: 2026-02-03 16:50:18 
  * @Last Modified by: ZhaoYing
- * @Last Modified time: 2026-03-31 15:48:02
+ * @Last Modified time: 2026-04-16 18:04:46
  */
 /**
  * Type definitions for Model Management
@@ -296,6 +296,7 @@ export interface CustomModelForm {
   is_audio?: boolean;
   is_omni?: boolean;
   is_thinking?: boolean;
+  json_output?: boolean;
   capability?: Capability[];
 }
 
@@ -325,7 +326,7 @@ export interface BaseRef {
   modelListDetailRefresh?: () => void;
 }
 
-export type Capability = 'vision' | 'audio' | 'video' | 'thinking';
+export type Capability = 'vision' | 'audio' | 'video' | 'thinking' | 'json_output';
 export interface Model {
   name: string;
   type: string;
diff --git a/web/src/views/Workflow/components/Properties/ModelConfig/index.tsx b/web/src/views/Workflow/components/Properties/ModelConfig/index.tsx
index 43476c53..2da6f266 100644
--- a/web/src/views/Workflow/components/Properties/ModelConfig/index.tsx
+++ b/web/src/views/Workflow/components/Properties/ModelConfig/index.tsx
@@ -1,16 +1,38 @@
-import { type FC } from "react";
+/*
+ * @Author: ZhaoYing 
+ * @Date: 2026-03-07 14:55:04 
+ * @Last Modified by:   ZhaoYing 
+ * @Last Modified time: 2026-04-17 10:05:32 
+ */
+import { type FC, useEffect, useState } from "react";
 import { useTranslation } from 'react-i18next'
-import { Form } from 'antd'
+import { Form, Switch } from 'antd'
 
 import RbSlider from '@/components/RbSlider'
 import RbCard from '@/components/RbCard/Card'
 import ModelSelect from '@/components/ModelSelect'
+import type { Model } from '@/views/ModelManagement/types';
 
 const ModelConfig: FC = () => {
   const { t } = useTranslation()
   const form = Form.useFormInstance()
   const model_id = Form.useWatch(['model_id'], form)
-  console.log('ModelConfig', model_id)
+  const [selectedModel, setSelectedModel] = useState<Model | null>(null)
+  const [options, setOptions] = useState<Model[]>([])
+
+  const updateOptions = (options: Model[]) => {
+    setOptions(options)
+  }
+
+  useEffect(() => {
+    if (model_id && options) {
+      const model = options.find(item => item.id === model_id)
+      setSelectedModel(model || null)
+      form.setFieldValue('json_output', false)
+    } else {
+      setSelectedModel(null)
+    }
+  }, [model_id, options])
 
   return (
     <>
@@ -25,6 +47,7 @@ const ModelConfig: FC = () => {
           params={{ type: 'llm,chat' }}
           className="rb:w-full!"
           size="small"
+          updateOptions={updateOptions}
         />
       </Form.Item>
       {model_id && (
@@ -52,7 +75,7 @@ const ModelConfig: FC = () => {
           <Form.Item
             name="max_tokens"
             label={t('workflow.config.llm.max_tokens')}
-            className="rb:mb-0!"
+            className="rb:mb-1.5!"
           >
             <RbSlider 
               min={256}
@@ -63,6 +86,16 @@ const ModelConfig: FC = () => {
               className="rb:-mt-2!"
             />
           </Form.Item>
+          <Form.Item
+            name="json_output"
+            valuePropName="checked"
+            label={t('workflow.config.llm.json_output')}
+            layout="horizontal"
+            className="rb:mb-0!"
+            hidden={!(selectedModel?.capability?.includes('json_output'))}
+          >
+            <Switch />
+          </Form.Item>
         </RbCard>
       )}
     </>
diff --git a/web/src/views/Workflow/constant.ts b/web/src/views/Workflow/constant.ts
index eed77e2c..cae20180 100644
--- a/web/src/views/Workflow/constant.ts
+++ b/web/src/views/Workflow/constant.ts
@@ -2,7 +2,7 @@
  * @Author: ZhaoYing 
  * @Date: 2026-02-03 15:06:18 
  * @Last Modified by: ZhaoYing
- * @Last Modified time: 2026-04-07 19:56:56
+ * @Last Modified time: 2026-04-16 17:52:30
  */
 import LoopNode from './components/Nodes/LoopNode';
 import NormalNode from './components/Nodes/NormalNode';
@@ -101,6 +101,10 @@ export const nodeLibrary: NodeLibrary[] = [
             step: 1, 
             defaultValue: 2000 
           },
+          json_output: {
+            type: 'define',
+            defaultValue: false
+          },
           context: {
             type: 'variableList',
             placeholder: 'workflow.config.llm.contextPlaceholder'