diff --git a/web/app/components/workflow/nodes/knowledge-retrieval/default.ts b/web/app/components/workflow/nodes/knowledge-retrieval/default.ts
index 958e176e2f..540cb8a869 100644
--- a/web/app/components/workflow/nodes/knowledge-retrieval/default.ts
+++ b/web/app/components/workflow/nodes/knowledge-retrieval/default.ts
@@ -4,6 +4,7 @@ import type { KnowledgeRetrievalNodeType } from './types'
 import { ALL_CHAT_AVAILABLE_BLOCKS, ALL_COMPLETION_AVAILABLE_BLOCKS } from '@/app/components/workflow/constants'
 
 import { RETRIEVE_TYPE } from '@/types/app'
+const i18nPrefix = 'workflow'
 
 const nodeDefault: NodeDefault<KnowledgeRetrievalNodeType> = {
   defaultValue: {
@@ -21,15 +22,22 @@ const nodeDefault: NodeDefault<KnowledgeRetrievalNodeType> = {
     const nodes = isChatMode ? ALL_CHAT_AVAILABLE_BLOCKS : ALL_COMPLETION_AVAILABLE_BLOCKS
     return nodes
   },
-  checkValid(payload: KnowledgeRetrievalNodeType) {
-    let isValid = true
+  checkValid(payload: KnowledgeRetrievalNodeType, t: any) {
     let errorMessages = ''
-    if (payload.type) {
-      isValid = true
-      errorMessages = ''
-    }
+    if (!errorMessages && (!payload.query_variable_selector || payload.query_variable_selector.length === 0))
+      errorMessages = t(`${i18nPrefix}.errorMsg.fieldRequired`, { field: t(`${i18nPrefix}.nodes.knowledgeRetrieval.queryVariable`) })
+
+    if (!errorMessages && (!payload.dataset_ids || payload.dataset_ids.length === 0))
+      errorMessages = t(`${i18nPrefix}.errorMsg.fieldRequired`, { field: t(`${i18nPrefix}.nodes.knowledgeRetrieval.knowledge`) })
+
+    if (!errorMessages && payload.retrieval_mode === RETRIEVE_TYPE.multiWay && !payload.multiple_retrieval_config?.reranking_model?.provider)
+      errorMessages = t(`${i18nPrefix}.errorMsg.fieldRequired`, { field: t(`${i18nPrefix}.errorMsg.fields.rerankModel`) })
+
+    if (!errorMessages && payload.retrieval_mode === RETRIEVE_TYPE.oneWay && !payload.single_retrieval_config?.model?.provider)
+      errorMessages = t(`${i18nPrefix}.errorMsg.fieldRequired`, { field: t('common.modelProvider.systemReasoningModel.key') })
+
     return {
-      isValid,
+      isValid: !errorMessages,
       errorMessage: errorMessages,
     }
   },
diff --git a/web/i18n/en-US/workflow.ts b/web/i18n/en-US/workflow.ts
index da67a3fb6e..22f710d39b 100644
--- a/web/i18n/en-US/workflow.ts
+++ b/web/i18n/en-US/workflow.ts
@@ -36,6 +36,7 @@ const translation = {
       variableValue: 'Variable Value',
       code: 'Code',
       model: 'Model',
+      rerankModel: 'Rerank Model',
     },
   },
   singleRun: {
diff --git a/web/i18n/zh-Hans/workflow.ts b/web/i18n/zh-Hans/workflow.ts
index 2df76fb6f1..4cbb19af7d 100644
--- a/web/i18n/zh-Hans/workflow.ts
+++ b/web/i18n/zh-Hans/workflow.ts
@@ -36,6 +36,7 @@ const translation = {
       variableValue: '变量值',
       code: '代码',
       model: '模型',
+      rerankModel: 'Rerank 模型',
     },
   },
   singleRun: {