diff --git a/src/views/flow/components/NodeTitle.vue b/src/views/flow/components/NodeTitle.vue
index 2f0a7f3..78fdde4 100644
--- a/src/views/flow/components/NodeTitle.vue
+++ b/src/views/flow/components/NodeTitle.vue
@@ -159,7 +159,8 @@ const execute = () => {
   document.dispatchEvent(new CustomEvent("singleNodeExecution", {
     bubbles: false,
     cancelable: false,
-    detail: { ...props.nodeProperties },
+    // 携带节点 ID，供单节点执行弹窗按节点恢复上次选择的机器人。
+    detail: { ...props.nodeProperties, nodeId: props.nodeId },
   }));
 };
 
diff --git a/src/views/flow/components/TestRun.vue b/src/views/flow/components/TestRun.vue
index 47daa2c..a2b586d 100644
--- a/src/views/flow/components/TestRun.vue
+++ b/src/views/flow/components/TestRun.vue
@@ -90,14 +90,42 @@ const props = defineProps({
 const ruleFormRef = ref()
 const rules = ref({});
 const tableData = ref([])
+// 按流程缓存整套试运行参数，关闭或执行后再次打开时继续使用。
+const trialRunCache = new Map()
 const bindingLoading = ref(false)
 const emptyBindingSummary = (robotId = '') => ({ robotId, matched: 0, missing: 0, untouched: 0 })
 const bindingSummary = ref(emptyBindingSummary())
 
 const emits = defineEmits(['close', 'changeState'])
 
+const cloneData = (data) => JSON.parse(JSON.stringify(data || []))
+
+// 根据参数层级恢复缓存值，同时兼容流程参数结构发生增删的情况。
+const mergeCachedValues = (source, cached) => {
+    const cachedByName = new Map((cached || []).map(item => [item.name, item]))
+    return (source || []).map((item, index) => {
+        const cachedAtIndex = cached?.[index]
+        const cachedItem = cachedAtIndex?.name === item.name ? cachedAtIndex : cachedByName.get(item.name)
+        if (!cachedItem) return item
+        const merged = { ...item, value: cachedItem.value }
+        if (Array.isArray(item.children)) {
+            merged.children = mergeCachedValues(item.children, cachedItem.children)
+        }
+        return merged
+    })
+}
+
+const cacheKey = () => props.flowId || '__new_flow__'
+
+// 深拷贝快照，避免后续表单编辑直接修改缓存内容。
+const rememberTrialRunParams = () => {
+    if (!tableData.value.length) return
+    trialRunCache.set(cacheKey(), cloneData(tableData.value))
+}
+
 const handleClose = () => {
-    ruleFormRef.value?.resetFields()
+    rememberTrialRunParams()
+    ruleFormRef.value?.clearValidate()
     emits('close')
 }
 
@@ -105,14 +133,17 @@ watch(() => props.drawer,
     (newVal) => {
         if (newVal) {
             const data = getStartNodeFormData()
-            tableData.value = data
-            bindingSummary.value = emptyBindingSummary()
+            const cached = trialRunCache.get(cacheKey())
+            tableData.value = mergeCachedValues(data, cached)
+            const robotId = tableData.value.find(item => item.name === 'robotId')?.value || ''
+            bindingSummary.value = emptyBindingSummary(robotId)
             loadRobotOptions()
         }
     }
 )
 
 const confirm = () => {
+    rememberTrialRunParams()
     lf.fitView()
     ruleFormRef.value.validate().then(async () => {
         const formData = formatTableData(tableData.value)
diff --git a/src/views/flow/index.vue b/src/views/flow/index.vue
index d66ea0c..f620e56 100644
--- a/src/views/flow/index.vue
+++ b/src/views/flow/index.vue
@@ -245,7 +245,7 @@
   </el-dialog>
 </template>
 <script setup>
-import { computed, reactive, ref, onMounted, onUnmounted, nextTick } from "vue";
+import { computed, reactive, ref, watch, onMounted, onUnmounted, nextTick } from "vue";
 import { MarkerType, VueFlow, useVueFlow } from "@vue-flow/core";
 import { v4 as uuid } from "uuid";
 import { Background } from "@vue-flow/background";
@@ -899,6 +899,10 @@ const rules = reactive({});
 const executeForm = ref();
 const nodeAction = ref("");
 const singleNodeExecuting = ref(false);
+const activeSingleNodeId = ref("");
+// 单节点机器人选择按节点缓存；新节点默认沿用最近一次选择。
+const singleNodeRobotCache = new Map();
+let lastSingleNodeRobotId = "";
 const stationLoading = ref(false);
 const singleNodeRobotOptions = ref([]);
 const flattenSingleNodeParams = (params, parentPath = [], fields = []) => {
@@ -945,6 +949,16 @@ const singleNodeRobotId = computed(() =>
 const singleNodeDeviceId = computed(() =>
   formData.nodeParams.find((item) => item.name === "deviceId")?.input
 );
+// 在执行、关闭弹窗或切换节点前记录当前机器人选择。
+const rememberSingleNodeRobot = () => {
+  if (!activeSingleNodeId.value || !singleNodeRobotId.value) return;
+  lastSingleNodeRobotId = singleNodeRobotId.value;
+  singleNodeRobotCache.set(activeSingleNodeId.value, singleNodeRobotId.value);
+};
+
+watch(visible, (value) => {
+  if (!value) rememberSingleNodeRobot();
+});
 
 const handleSingleNodeRobotChange = async (robotId) => {
   const deviceParam = formData.nodeParams.find((item) => item.name === "deviceId");
@@ -1035,10 +1049,12 @@ const loadSingleNodeRobots = async () => {
 };
 
 const singleNodeExecution = async (e) => {
-  const { name, nodeType, nodeParams, action } = e.detail;
+  rememberSingleNodeRobot();
+  const { name, nodeType, nodeParams, action, nodeId } = e.detail;
   const executionParams = JSON.parse(JSON.stringify(nodeParams || []));
   const normalizedAction = String(action || "").toUpperCase();
   const effectiveNodeType = nodeType || (getDeviceKindForAction(normalizedAction) ? "EDGE" : "");
+  activeSingleNodeId.value = nodeId || `${normalizedAction}:${name || ""}`;
   nodeName.value = name;
   visible.value = true;
   nodeAction.value = normalizedAction;
@@ -1057,6 +1073,11 @@ const singleNodeExecution = async (e) => {
       },
       ...executionParams,
     ];
+    const cachedRobotId = singleNodeRobotCache.get(activeSingleNodeId.value) || lastSingleNodeRobotId;
+    if (cachedRobotId) {
+      formData.nodeParams[0].input = cachedRobotId;
+      await handleSingleNodeRobotChange(cachedRobotId);
+    }
   } else {
     formData.nodeParams = executionParams;
   }
@@ -1081,6 +1102,7 @@ const execute = async () => {
     }
   }
   if (!validateSingleNodeParams()) return;
+  rememberSingleNodeRobot();
   singleNodeExecuting.value = true;
   try {
     const res = await flowAction({