diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/MsScenario.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/MsScenario.java
index 4f321bdca7..77e2c687db 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/MsScenario.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/MsScenario.java
@@ -15,6 +15,7 @@ import io.metersphere.api.service.ApiTestEnvironmentService;
 import io.metersphere.base.domain.ApiScenarioWithBLOBs;
 import io.metersphere.base.domain.ApiTestEnvironmentWithBLOBs;
 import io.metersphere.commons.utils.CommonBeanFactory;
+import io.metersphere.commons.utils.ScriptEngineUtils;
 import io.metersphere.commons.utils.SessionUtils;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
@@ -132,7 +133,7 @@ public class MsScenario extends MsTestElement {
         // 场景变量和环境变量
         Arguments arguments = arguments(config);
         if (arguments != null) {
-            tree.add(arguments);
+            tree.add(config.valueSupposeMock(arguments));
         }
         this.addCsvDataSet(tree, variables);
         this.addCounter(tree, variables);
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/ParameterConfig.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/ParameterConfig.java
index e5117db258..acf0e3313d 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/ParameterConfig.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/ParameterConfig.java
@@ -2,7 +2,9 @@ package io.metersphere.api.dto.definition.request;
 
 import io.metersphere.api.dto.definition.request.variable.ScenarioVariable;
 import io.metersphere.api.dto.scenario.environment.EnvironmentConfig;
+import io.metersphere.commons.utils.ScriptEngineUtils;
 import lombok.Data;
+import org.apache.jmeter.config.Arguments;
 
 import java.util.List;
 import java.util.Map;
@@ -37,4 +39,13 @@ public class ParameterConfig {
         }
         return false;
     }
+
+    static public Arguments valueSupposeMock(Arguments arguments) {
+        for(int i = 0; i < arguments.getArguments().size(); ++i) {
+            String argValue = arguments.getArgument(i).getValue();
+            arguments.getArgument(i).setValue(ScriptEngineUtils.calculate(argValue));
+        }
+        return arguments;
+    }
+
 }
\ No newline at end of file
diff --git a/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsHTTPSamplerProxy.java b/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsHTTPSamplerProxy.java
index cf61040421..128685a0e8 100644
--- a/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsHTTPSamplerProxy.java
+++ b/backend/src/main/java/io/metersphere/api/dto/definition/request/sampler/MsHTTPSamplerProxy.java
@@ -122,7 +122,7 @@ public class MsHTTPSamplerProxy extends MsTestElement {
         // 添加环境中的公共变量
         Arguments arguments = this.addArguments(config);
         if (arguments != null) {
-            tree.add(arguments);
+            tree.add(config.valueSupposeMock(arguments));
         }
         try {
             if (config.isEffective(this.getProjectId())) {
diff --git a/frontend/src/business/components/api/automation/scenario/variable/EditConstant.vue b/frontend/src/business/components/api/automation/scenario/variable/EditConstant.vue
index 23f3a945db..84cb7bc194 100644
--- a/frontend/src/business/components/api/automation/scenario/variable/EditConstant.vue
+++ b/frontend/src/business/components/api/automation/scenario/variable/EditConstant.vue
@@ -1,30 +1,68 @@
 <template>
-  <el-form :model="editData" label-position="right" label-width="80px" size="small" ref="form">
-    <el-form-item :label="$t('api_test.variable_name')" prop="name">
-      <el-input v-model="editData.name" :placeholder="$t('api_test.variable_name')" ref="nameInput"></el-input>
-    </el-form-item>
+  <div>
+    <el-form :model="editData" label-position="right" label-width="80px" size="small" ref="form">
+      <el-form-item :label="$t('api_test.variable_name')" prop="name">
+        <el-input v-model="editData.name" :placeholder="$t('api_test.variable_name')" ref="nameInput"></el-input>
+      </el-form-item>
 
-    <el-form-item :label="$t('commons.description')" prop="description">
-      <el-input class="ms-http-textarea"
-                v-model="editData.description"
-                type="textarea"
-                :autosize="{ minRows: 2, maxRows: 10}"
-                :rows="2" size="small"/>
-    </el-form-item>
+      <el-form-item :label="$t('commons.description')" prop="description">
+        <el-input class="ms-http-textarea"
+                  v-model="editData.description"
+                  type="textarea"
+                  :autosize="{ minRows: 2, maxRows: 10}"
+                  :rows="2" size="small"/>
+      </el-form-item>
 
-    <el-form-item :label="$t('api_test.value')" prop="value">
-      <el-input v-model="editData.value" :placeholder="$t('api_test.value')"></el-input>
-    </el-form-item>
-  </el-form>
+      <el-form-item :label="$t('api_test.value')" prop="value">
+        <el-col class="item">
+          <el-autocomplete
+            size="small"
+            :placeholder="$t('api_test.value')"
+            style="width: 100%;"
+            v-model="editData.value"
+            value-key="name"
+            :fetch-suggestions="funcSearch"
+            highlight-first-item>
+            <i slot="suffix" class="el-input__icon el-icon-edit pointer" @click="advanced"></i>
+          </el-autocomplete>
+        </el-col>
+      </el-form-item>
+    </el-form>
+    <ms-api-variable-advance ref="variableAdvance"/>
+  </div>
 </template>
 
 <script>
+  import {JMETER_FUNC, MOCKJS_FUNC} from "@/common/js/constants";
+  import MsApiVariableAdvance from "../../../test/components/ApiVariableAdvance";
+
   export default {
     name: "MsEditConstant",
-    components: {},
+    components: {MsApiVariableAdvance},
     props: {
       editData: {},
     },
+    methods: {
+      advanced() {
+        this.$refs.variableAdvance.open();
+      },
+      createFilter(queryString) {
+        return (variable) => {
+          return (variable.value.toLowerCase().indexOf(queryString.toLowerCase()) === 0);
+        };
+      },
+      funcFilter(queryString) {
+        return (func) => {
+          return (func.name.toLowerCase().indexOf(queryString.toLowerCase()) > -1);
+        };
+      },
+      funcSearch(queryString, cb) {
+        let funcs = MOCKJS_FUNC.concat(JMETER_FUNC);
+        let results = queryString ? funcs.filter(this.funcFilter(queryString)) : funcs;
+        // 调用 callback 返回建议列表的数据
+        cb(results);
+      },
+    },
     created() {
       this.$nextTick(() => {
         this.$refs.nameInput.focus();
diff --git a/frontend/src/business/components/api/definition/components/ApiScenarioVariables.vue b/frontend/src/business/components/api/definition/components/ApiScenarioVariables.vue
index edda13459d..c692d6be57 100644
--- a/frontend/src/business/components/api/definition/components/ApiScenarioVariables.vue
+++ b/frontend/src/business/components/api/definition/components/ApiScenarioVariables.vue
@@ -15,8 +15,15 @@
                                  :placeholder="$t('api_test.variable_name')" show-word-limit/>
         </el-col>
         <el-col>
-          <el-input :disabled="isReadOnly" v-model="item.value" size="small" @change="change"
-                    :placeholder="$t('api_test.value')" show-word-limit/>
+          <el-autocomplete
+            size="small"
+            v-model="item.value"
+            :fetch-suggestions="funcSearch"
+            :placeholder="$t('api_test.value')"
+            value-key="name"
+            highlight-first-item>
+            <i slot="suffix" class="el-input__icon el-icon-edit pointer" @click="advanced"></i>
+          </el-autocomplete>
         </el-col>
         <el-col>
           <el-input v-model="item.description" size="small" maxlength="200"
@@ -33,16 +40,19 @@
         </el-col>
       </el-row>
     </div>
+    <ms-api-variable-advance ref="variableAdvance"/>
   </div>
 </template>
 
 <script>
   import {KeyValue} from "../model/ApiTestModel";
   import MsApiVariableInput from "./ApiVariableInput";
+  import {JMETER_FUNC, MOCKJS_FUNC} from "@/common/js/constants";
+  import MsApiVariableAdvance from "../../test/components/ApiVariableAdvance";
 
   export default {
     name: "MsApiScenarioVariables",
-    components: {MsApiVariableInput},
+    components: {MsApiVariableInput, MsApiVariableAdvance},
     props: {
       description: String,
       items: Array,
@@ -94,7 +104,26 @@
       },
       isDisable: function (index) {
         return this.items.length - 1 === index;
-      }
+      },
+      advanced() {
+        this.$refs.variableAdvance.open();
+      },
+      createFilter(queryString) {
+        return (variable) => {
+          return (variable.value.toLowerCase().indexOf(queryString.toLowerCase()) === 0);
+        };
+      },
+      funcFilter(queryString) {
+        return (func) => {
+          return (func.name.toLowerCase().indexOf(queryString.toLowerCase()) > -1);
+        };
+      },
+      funcSearch(queryString, cb) {
+        let funcs = MOCKJS_FUNC.concat(JMETER_FUNC);
+        let results = queryString ? funcs.filter(this.funcFilter(queryString)) : funcs;
+        // 调用 callback 返回建议列表的数据
+        cb(results);
+      },
     },
 
     created() {
diff --git a/frontend/src/business/components/api/test/components/ApiVariableAdvance.vue b/frontend/src/business/components/api/test/components/ApiVariableAdvance.vue
index 7249d4cb0a..9d02dcaea6 100644
--- a/frontend/src/business/components/api/test/components/ApiVariableAdvance.vue
+++ b/frontend/src/business/components/api/test/components/ApiVariableAdvance.vue
@@ -2,6 +2,7 @@
   <el-dialog :title="$t('api_test.request.parameters_advance')"
              :visible.sync="itemValueVisible"
              class="advanced-item-value"
+             :append-to-body="true"
              width="70%">
     <el-tabs tab-position="top" style="height: 50vh;" @tab-click="selectTab">
       <el-tab-pane :label="$t('api_test.request.parameters_advance_mock')">