diff --git a/frontend/src/business/components/api/automation/scenario/EditApiScenario.vue b/frontend/src/business/components/api/automation/scenario/EditApiScenario.vue
index c9d0d3ae1f..f10cab28b7 100644
--- a/frontend/src/business/components/api/automation/scenario/EditApiScenario.vue
+++ b/frontend/src/business/components/api/automation/scenario/EditApiScenario.vue
@@ -184,11 +184,13 @@
                 <el-tree node-key="resourceId" :props="props" :data="scenarioDefinition" class="ms-tree"
                          :expand-on-click-node="false"
                          :allow-drop="allowDrop"
+                         :allow-drag="allowDrag"
                          :empty-text="$t('api_test.scenario.step_info')"
                          highlight-current
                          :show-checkbox="isBatchProcess"
                          @check-change="chooseHeadsUp"
-                         @node-drag-end="allowDrag" @node-click="nodeClick" draggable ref="stepTree" :key="reloadTree">
+                         @node-drag-end="nodeDragEnd" @node-click="nodeClick" draggable ref="stepTree"
+                         :key="reloadTree">
 
                   <el-row class="custom-tree-node" :gutter="10" type="flex" align="middle" slot-scope="{node, data}"
                           style="width: 100%">
@@ -1552,6 +1554,12 @@ export default {
     environmentConfigClose() {
       this.getEnvironments();
     },
+    allowDrag(node) {
+      if (node.data && node.data.disabled && node.parent.data && node.parent.data.disabled) {
+        return false;
+      }
+      return true;
+    },
     allowDrop(draggingNode, dropNode, dropType) {
       if (draggingNode.data.type === 'Assertions' || dropNode.data.type === 'Assertions') {
         return false;
@@ -1566,12 +1574,13 @@ export default {
         }
         return false;
       } else if (dropType === "inner" && dropNode.data.referenced !== 'REF' && dropNode.data.referenced !== 'Deleted'
+        && !dropNode.data.disabled
         && (this.stepFilter.get(dropNode.data.type) && this.stepFilter.get(dropNode.data.type).indexOf(draggingNode.data.type) != -1)) {
         return true;
       }
       return false;
     },
-    allowDrag(draggingNode, dropNode, dropType) {
+    nodeDragEnd(draggingNode, dropNode, dropType) {
       if (dropNode && draggingNode && dropType) {
         this.sort();
         this.forceRerender();
diff --git a/frontend/src/business/components/api/automation/scenario/component/ApiScenarioComponent.vue b/frontend/src/business/components/api/automation/scenario/component/ApiScenarioComponent.vue
index 5eabd31147..eb08188ab7 100644
--- a/frontend/src/business/components/api/automation/scenario/component/ApiScenarioComponent.vue
+++ b/frontend/src/business/components/api/automation/scenario/component/ApiScenarioComponent.vue
@@ -133,6 +133,7 @@ export default {
     this.isShowNum = this.scenario.num ? true : false;
     if (this.scenario.id && this.scenario.referenced === 'REF' && !this.scenario.loaded && this.scenario.hashTree) {
       this.scenario.root = this.node.parent.parent ? false : true;
+      this.scenario.disabled = true;
       this.recursive(this.scenario.hashTree, this.scenario.projectId, true);
     }
   },
@@ -233,6 +234,7 @@ export default {
         }
       }
       if (this.scenario && this.scenario.hashTree && this.node.expanded) {
+        this.scenario.disabled = true;
         this.recursive(this.scenario.hashTree, this.scenario.projectId, false);
       }
       this.reload();
diff --git a/frontend/src/business/components/api/automation/scenario/component/LoopController.vue b/frontend/src/business/components/api/automation/scenario/component/LoopController.vue
index 36a80b38b1..1c7682ced2 100644
--- a/frontend/src/business/components/api/automation/scenario/component/LoopController.vue
+++ b/frontend/src/business/components/api/automation/scenario/component/LoopController.vue
@@ -1,23 +1,58 @@
 <template>
   <div>
-    <ms-run :debug="true" :environment="envMap" :reportId="reportId" :saved="false" :runMode="'DEFINITION'" :run-data="debugData" @errorRefresh="errorRefresh" @runRefresh="runRefresh" ref="runTest"/>
-    <api-base-component :if-from-variable-advance="ifFromVariableAdvance" @copy="copyRow" @active="active(controller)" @remove="remove" :data="controller" :draggable="draggable" :is-max="isMax" :show-btn="showBtn" :show-version="showVersion" color="#02A7F0"
-                        background-color="#F4F4F5" :title="$t('api_test.automation.loop_controller')">
-
+    <ms-run
+      :debug="true"
+      :environment="envMap"
+      :reportId="reportId"
+      :saved="false"
+      :runMode="'DEFINITION'"
+      :run-data="debugData"
+      @errorRefresh="errorRefresh"
+      @runRefresh="runRefresh"
+      ref="runTest"/>
+    <api-base-component
+      :if-from-variable-advance="ifFromVariableAdvance"
+      :data="controller"
+      :draggable="draggable"
+      :is-max="isMax"
+      :show-btn="showBtn"
+      :show-version="showVersion"
+      :title="$t('api_test.automation.loop_controller')"
+      @copy="copyRow"
+      @active="active(controller)"
+      @remove="remove"
+      color="#02A7F0"
+      background-color="#F4F4F5">
       <template v-slot:headerLeft>
-        <i class="icon el-icon-arrow-right" :class="{'is-active': controller.active}" style="margin-right: 10px" v-if="!isMax"/>
-        <el-radio @change="changeRadio" class="ms-radio ms-radio-margin" v-model="controller.loopType" label="LOOP_COUNT">{{ $t('loop.loops_title') }}</el-radio>
-        <el-radio @change="changeRadio" class="ms-radio ms-radio-margin" v-model="controller.loopType" label="FOREACH">{{ $t('loop.foreach') }}</el-radio>
-        <el-radio @change="changeRadio" class="ms-radio ms-radio-margin" v-model="controller.loopType" label="WHILE">{{ $t('loop.while') }}</el-radio>
+        <i class="icon el-icon-arrow-right" :class="{'is-active': controller.active}" style="margin-right: 10px"
+           v-if="!isMax"/>
+        <el-radio :disabled="controller.disabled" @change="changeRadio" class="ms-radio ms-radio-margin"
+                  v-model="controller.loopType" label="LOOP_COUNT">
+          {{ $t('loop.loops_title') }}
+        </el-radio>
+        <el-radio :disabled="controller.disabled" @change="changeRadio" class="ms-radio ms-radio-margin"
+                  v-model="controller.loopType" label="FOREACH">
+          {{ $t('loop.foreach') }}
+        </el-radio>
+        <el-radio :disabled="controller.disabled" @change="changeRadio" class="ms-radio ms-radio-margin"
+                  v-model="controller.loopType" label="WHILE">
+          {{ $t('loop.while') }}
+        </el-radio>
       </template>
 
       <template v-slot:message>
-        <span v-if="requestResult && requestResult.scenarios && requestResult.scenarios.length > 0 " style="color: #8c939d;margin-right: 10px">
-        </span>
+        <span v-if="requestResult && requestResult.scenarios && requestResult.scenarios.length > 0 "
+              style="color: #8c939d;margin-right: 10px"/>
       </template>
 
       <template v-slot:button>
-        <el-button @click="conn" :disabled="!controller.enable" :tip="$t('api_test.run')" icon="el-icon-video-play" style="background-color: #409EFF;color: white;padding: 5px" size="mini" circle/>
+        <el-button
+          :disabled="!controller.enable"
+          :tip="$t('api_test.run')"
+          @click="conn"
+          icon="el-icon-video-play"
+          class="ms-conn"
+          size="mini" circle/>
       </template>
       <div v-if="controller.loopType==='LOOP_COUNT'" draggable v-loading="loading">
         <el-row>
@@ -28,14 +63,19 @@
           </el-col>
           <el-col :span="8">
             <span class="ms-span ms-radio">{{ $t('loop.interval') }}</span>
-            <el-input-number size="small" v-model="controller.countController.interval" :placeholder="$t('commons.millisecond')" :max="1000*10000000" :min="0" :step="1000"/>
+            <el-input-number
+              v-model="controller.countController.interval"
+              :disabled="controller.disabled"
+              :placeholder="$t('commons.millisecond')"
+              :max="1000*10000000"
+              :min="0" :step="1000" size="small"/>
             <span class="ms-span ms-radio">ms</span>
           </el-col>
           <el-col :span="8">
             <span class="ms-span ms-radio">{{ $t('loop.proceed') }}</span>
             <el-tooltip class="item" effect="dark" :content="$t('api_test.automation.loop_content')" placement="top">>
-              <el-switch v-model="controller.countController.proceed" @change="switchChange"/>
-
+              <el-switch :disabled="controller.disabled" v-model="controller.countController.proceed"
+                         @change="switchChange"/>
             </el-tooltip>
           </el-col>
         </el-row>
@@ -44,29 +84,64 @@
       <div v-else-if="controller.loopType==='FOREACH'" draggable v-loading="loading">
         <el-row>
           <el-col :span="8">
-            <el-input :placeholder="$t('api_test.automation.loop_return_val')" v-model="controller.forEachController.returnVal" size="small"/>
+            <el-input
+              :disabled="controller.disabled"
+              :placeholder="$t('api_test.automation.loop_return_val')"
+              v-model="controller.forEachController.returnVal" size="small"/>
           </el-col>
           <el-col :span="1" style="margin-top: 6px">
             <span style="margin:10px 10px 10px">in</span>
           </el-col>
           <el-col :span="8">
-            <el-input :placeholder="$t('api_test.automation.loop_input_val')" v-model="controller.forEachController.inputVal" size="small"/>
+            <el-input
+              :disabled="controller.disabled"
+              :placeholder="$t('api_test.automation.loop_input_val')"
+              v-model="controller.forEachController.inputVal" size="small"/>
           </el-col>
           <el-col :span="7">
             <span class="ms-span ms-radio">{{ $t('loop.interval') }}</span>
-            <el-input-number size="small" v-model="controller.forEachController.interval" :placeholder="$t('commons.millisecond')" :max="1000*10000000" :min="0" :step="1000"/>
+            <el-input-number
+              v-model="controller.forEachController.interval"
+              :disabled="controller.disabled"
+              size="small"
+              :placeholder="$t('commons.millisecond')"
+              :max="1000*10000000"
+              :min="0"
+              :step="1000"/>
             <span class="ms-span ms-radio">ms</span>
           </el-col>
         </el-row>
       </div>
       <div v-else draggable v-loading="loading">
-        <el-input size="small" v-model="controller.whileController.variable" style="width: 20%" :placeholder="$t('api_test.request.condition_variable')"/>
-        <el-select v-model="controller.whileController.operator" :placeholder="$t('commons.please_select')" size="small" @change="change" style="width: 10%;margin-left: 10px">
+        <el-input
+          v-model="controller.whileController.variable"
+          :disabled="controller.disabled"
+          size="small"
+          :placeholder="$t('api_test.request.condition_variable')"
+          style="width: 20%"
+        />
+        <el-select
+          v-model="controller.whileController.operator"
+          :disabled="controller.disabled"
+          :placeholder="$t('commons.please_select')" size="small"
+          @change="change" style="width: 10%;margin-left: 10px">
           <el-option v-for="o in operators" :key="o.value" :label="$t(o.label)" :value="o.value"/>
         </el-select>
-        <el-input size="small" v-model="controller.whileController.value" :placeholder="$t('api_test.value')" v-if="!hasEmptyOperator" style="width: 20%;margin-left: 20px"/>
+        <el-input
+          v-model="controller.whileController.value"
+          :disabled="controller.disabled"
+          size="small"
+          :placeholder="$t('api_test.value')"
+          v-if="!hasEmptyOperator" style="width: 20%;margin-left: 20px"/>
         <span class="ms-span ms-radio">{{ $t('loop.timeout') }}</span>
-        <el-input-number size="small" v-model="controller.whileController.timeout" :placeholder="$t('commons.millisecond')" :max="1000*10000000" :min="3000" :step="1000"/>
+        <el-input-number
+          v-model="controller.whileController.timeout"
+          :disabled="controller.disabled"
+          size="small"
+          :placeholder="$t('commons.millisecond')"
+          :max="1000*10000000"
+          :min="3000"
+          :step="1000"/>
         <span class="ms-span ms-radio">ms</span>
       </div>
 
@@ -413,4 +488,10 @@ export default {
   white-space: nowrap;
   width: 60px;
 }
+
+.ms-conn {
+  background-color: #409EFF;
+  color: white;
+  padding: 5px
+}
 </style>