diff --git a/ui/src/workflow/nodes/mcp-node/component/McpServerInputDialog.vue b/ui/src/workflow/nodes/mcp-node/component/McpServerInputDialog.vue
new file mode 100644
index 000000000..34093de56
--- /dev/null
+++ b/ui/src/workflow/nodes/mcp-node/component/McpServerInputDialog.vue
@@ -0,0 +1,62 @@
+<template>
+  <el-dialog
+    width="600"
+    title="设置变量"
+    v-model="dialogVisible"
+    :close-on-click-modal="false"
+    :close-on-press-escape="false"
+    :append-to-body="true"
+  >
+    <el-form label-position="top" ref="formRef" :model="form" require-asterisk-position="right">
+      <el-form-item v-for="item in input_field_list" :label="item" :key="item" :prop="item"
+                    :rules="{ required: true, message: $t('dynamicsForm.tip.requiredMessage'), trigger: 'blur' }">
+        <el-input v-model="form[item]"></el-input>
+      </el-form-item>
+    </el-form>
+    <template #footer>
+      <span class="dialog-footer">
+        <el-button @click.prevent="dialogVisible = false"> {{ $t('common.cancel') }} </el-button>
+        <el-button type="primary" @click="submit(formRef)" :loading="loading">
+          {{ $t('common.save') }}
+        </el-button>
+      </span>
+    </template>
+  </el-dialog>
+</template>
+
+<script setup lang="ts">
+import { ref } from 'vue'
+import type { FormInstance } from 'element-plus'
+
+const emit = defineEmits<{
+  (e: 'refresh', value: any): void;
+}>();
+
+const dialogVisible = ref(false)
+const loading = ref(false)
+const formRef = ref<FormInstance>()
+const form = ref<any>({})
+
+const input_field_list = ref<string[]>([])
+
+function open(vars: string[]) {
+  dialogVisible.value = true
+  input_field_list.value = vars
+}
+
+const submit = async (formEl: FormInstance | undefined) => {
+  if (!formEl) return
+  await formEl.validate((valid) => {
+    if (valid) {
+      emit('refresh', form.value)
+      dialogVisible.value = false
+    }
+  })
+}
+
+
+defineExpose({open})
+</script>
+<style scoped lang="scss">
+
+</style>
diff --git a/ui/src/workflow/nodes/mcp-node/index.vue b/ui/src/workflow/nodes/mcp-node/index.vue
index 93e7abd18..acd640429 100644
--- a/ui/src/workflow/nodes/mcp-node/index.vue
+++ b/ui/src/workflow/nodes/mcp-node/index.vue
@@ -246,6 +246,7 @@
       </div>
     </template>
   </NodeContainer>
+  <McpServerInputDialog ref="mcpServerInputDialogRef" @refresh="handleMcpVariables" />
 </template>
 <script setup lang="ts">
 import { cloneDeep, set } from 'lodash'
@@ -256,6 +257,7 @@ import { t } from '@/locales'
 import { MsgError, MsgSuccess } from '@/utils/message'
 import TooltipLabel from '@/components/dynamics-form/items/label/TooltipLabel.vue'
 import NodeCascader from '@/workflow/common/NodeCascader.vue'
+import McpServerInputDialog from "./component/McpServerInputDialog.vue";
 import { useRoute } from 'vue-router'
 import { loadSharedApi } from '@/utils/dynamics-api/shared-api'
 import { resetUrl } from '@/utils/common'
@@ -339,12 +341,22 @@ function getTools() {
   }
   try {
     JSON.parse(form_data.value.mcp_servers)
+    const vars = extractPlaceholders(form_data.value.mcp_servers)
+    if (vars.length > 0) {
+      mcpServerInputDialogRef.value.open(vars)
+      return
+    }
   } catch (e) {
     MsgError(t('views.applicationWorkflow.nodes.mcpNode.mcpServerTip'))
     return
   }
-  loadSharedApi({ type: 'application', systemType: apiType.value })
-    .getMcpTools(id, form_data.value.mcp_servers, loading)
+  // 一切正常，获取tool
+  _getTools(form_data.value.mcp_servers)
+}
+
+function _getTools(mcp_servers: any) {
+   loadSharedApi({ type: 'application', systemType: apiType.value })
+    .getMcpTools(id, mcp_servers, loading)
     .then((res: any) => {
       form_data.value.mcp_tools = res.data
       MsgSuccess(t('views.applicationWorkflow.nodes.mcpNode.getToolsSuccess'))
@@ -355,6 +367,47 @@ function getTools() {
     })
 }
 
+const mcpServerInputDialogRef = ref()
+// 提取 JSON 中所有占位符（{{...}}）的变量路径
+function extractPlaceholders(input: unknown): string[] {
+  const re = /\{\{\s*([a-zA-Z_][\w.]*)\s*\}\}/g; // 捕获 {{ path.like.this }}
+  const found = new Set<string>();
+
+  const visit = (v: unknown) => {
+    if (typeof v === 'string') {
+      let m: RegExpExecArray | null;
+      while ((m = re.exec(v)) !== null) found.add(m[1]);
+    } else if (Array.isArray(v)) {
+      v.forEach(visit);
+    } else if (v && typeof v === 'object') {
+      Object.values(v as Record<string, unknown>).forEach(visit);
+    }
+  };
+
+  // 如果传入的是 JSON 字符串，尝试解析，否则按字符串/对象处理
+  if (typeof input === 'string') {
+    try {
+      visit(JSON.parse(input));
+    } catch {
+      visit(input);
+    }
+  } else {
+    visit(input);
+  }
+
+  return [...found];
+}
+
+function handleMcpVariables(vars: any) {
+  let mcp_servers = form_data.value.mcp_servers
+  for (const item in vars) {
+    mcp_servers = mcp_servers.replace(`{{${item}}}`, vars[item])
+  }
+
+  // 一切正常，获取tool
+  _getTools(mcp_servers)
+}
+
 function changeTool() {
   form_data.value.mcp_server = form_data.value.mcp_tools.find(
     (item: any) => item.name === form_data.value.mcp_tool,