diff --git a/web/src/views/ApplicationConfig/components/Knowledge/KnowledgeConfigModal.tsx b/web/src/views/ApplicationConfig/components/Knowledge/KnowledgeConfigModal.tsx
index abf56b18..70b17a11 100644
--- a/web/src/views/ApplicationConfig/components/Knowledge/KnowledgeConfigModal.tsx
+++ b/web/src/views/ApplicationConfig/components/Knowledge/KnowledgeConfigModal.tsx
@@ -66,7 +66,7 @@ const KnowledgeConfigModal = forwardRef<KnowledgeConfigModalRef, KnowledgeConfig
   useEffect(() => {
     if (values?.retrieve_type) {
       const fieldsToReset = Object.keys(values).filter(key => 
-        key !== 'kb_id' && key !== 'retrieve_type'
+        key !== 'kb_id' && key !== 'retrieve_type' && key !== 'top_k'
       ) as (keyof KnowledgeConfigForm)[];
       form.resetFields(fieldsToReset);
     }
diff --git a/web/src/views/Workflow/components/Properties/Knowledge/KnowledgeConfigModal.tsx b/web/src/views/Workflow/components/Properties/Knowledge/KnowledgeConfigModal.tsx
index 77ca21a2..196ce8e3 100644
--- a/web/src/views/Workflow/components/Properties/Knowledge/KnowledgeConfigModal.tsx
+++ b/web/src/views/Workflow/components/Properties/Knowledge/KnowledgeConfigModal.tsx
@@ -66,7 +66,7 @@ const KnowledgeConfigModal = forwardRef<KnowledgeConfigModalRef, KnowledgeConfig
   useEffect(() => {
     if (values?.retrieve_type) {
       const fieldsToReset = Object.keys(values).filter(key => 
-        key !== 'kb_id' && key !== 'retrieve_type'
+        key !== 'kb_id' && key !== 'retrieve_type' && key !== 'top_k'
       ) as (keyof KnowledgeConfigForm)[];
       form.resetFields(fieldsToReset);
     }
@@ -108,6 +108,7 @@ const KnowledgeConfigModal = forwardRef<KnowledgeConfigModalRef, KnowledgeConfig
               label: t(`application.${key}`),
               value: key,
             }))}
+            // onChange={handleChange}
           />
         </FormItem>
         {/* Top K */}
@@ -116,13 +117,12 @@ const KnowledgeConfigModal = forwardRef<KnowledgeConfigModalRef, KnowledgeConfig
           label={t('application.top_k')}
           rules={[{ required: true, message: t('common.pleaseEnter') }]}
           extra={t('application.top_k_desc')}
-          initialValue={5}
         >
           <InputNumber
             style={{ width: '100%' }}
             min={1}
             max={20}
-            onChange={(value) => form.setFieldValue('top_k', value)}
+            // onChange={(value) => form.setFieldValue('top_k', value)}
           />
         </FormItem>
         {/* 语义相似度阈值 similarity_threshold */}
diff --git a/web/src/views/Workflow/constant.ts b/web/src/views/Workflow/constant.ts
index aab8be7d..f528b9df 100644
--- a/web/src/views/Workflow/constant.ts
+++ b/web/src/views/Workflow/constant.ts
@@ -284,7 +284,7 @@ export const nodeLibrary: NodeLibrary[] = [
         config: {
           input: {
             type: 'variableList',
-            filterNodeTypes: ['knowledge-retrieval', 'iteration', 'loop'],
+            filterNodeTypes: ['knowledge-retrieval', 'iteration', 'loop', 'parameter-extractor'],
             filterVariableNames: ['message']
           },
           parallel: {