diff --git a/web/app/components/workflow/nodes/tool/default.ts b/web/app/components/workflow/nodes/tool/default.ts
index 7e1e369957..847f021418 100644
--- a/web/app/components/workflow/nodes/tool/default.ts
+++ b/web/app/components/workflow/nodes/tool/default.ts
@@ -1,6 +1,7 @@
 import { BlockEnum } from '../../types'
 import type { NodeDefault } from '../../types'
 import type { ToolNodeType } from './types'
+import { VarType as VarKindType } from '@/app/components/workflow/nodes/tool/types'
 import { ALL_CHAT_AVAILABLE_BLOCKS, ALL_COMPLETION_AVAILABLE_BLOCKS } from '@/app/components/workflow/constants'
 
 const i18nPrefix = 'workflow.errorMsg'
@@ -27,9 +28,18 @@ const nodeDefault: NodeDefault<ToolNodeType> = {
     toolInputsSchema.filter((field: any) => {
       return field.required
     }).forEach((field: any) => {
-      const value = payload.tool_parameters.find((item: any) => item.variable === field.variable)?.value
-      if (!errorMessages && (value === undefined || value === null || value === ''))
-        errorMessages = t(`${i18nPrefix}.fieldRequired`, { field: field.label[language] })
+      const targetVar = payload.tool_parameters.find((item: any) => item.variable === field.variable)
+      if (!targetVar)
+        return
+      const { variable_type, value, value_selector } = targetVar
+      if (variable_type === VarKindType.selector) {
+        if (!errorMessages && (!value_selector || value_selector.length === 0))
+          errorMessages = t(`${i18nPrefix}.fieldRequired`, { field: field.label })
+      }
+      if (variable_type === VarKindType.static) {
+        if (!errorMessages && (value === undefined || value === null || value === ''))
+          errorMessages = t(`${i18nPrefix}.fieldRequired`, { field: field.label })
+      }
     })
 
     if (!errorMessages) {