diff --git a/api-test/frontend/src/business/definition/components/ApiVariable.vue b/api-test/frontend/src/business/definition/components/ApiVariable.vue
index d031ce9bd1..5df6ed335e 100644
--- a/api-test/frontend/src/business/definition/components/ApiVariable.vue
+++ b/api-test/frontend/src/business/definition/components/ApiVariable.vue
@@ -430,8 +430,8 @@ export default {
             file: false,
             files: null,
             isEdit: false,
-            max: null,
-            min: null,
+            max: 0,
+            min: 0,
             required: false,
             type: 'text',
             urlEncode: this.urlEncode,
@@ -534,8 +534,8 @@ export default {
           file: false,
           files: null,
           isEdit: false,
-          max: null,
-          min: null,
+          max: 0,
+          min: 0,
           required: false,
           type: 'text',
           urlEncode: this.urlEncode,
diff --git a/api-test/frontend/src/business/definition/model/ApiTestModel.js b/api-test/frontend/src/business/definition/model/ApiTestModel.js
index 11c9f26762..454c7bf274 100644
--- a/api-test/frontend/src/business/definition/model/ApiTestModel.js
+++ b/api-test/frontend/src/business/definition/model/ApiTestModel.js
@@ -787,6 +787,8 @@ export class KeyValue extends BaseConfig {
     this.enable = undefined;
     this.uuid = undefined;
     this.time = undefined;
+    this.max = 0;
+    this.min = 0;
     this.contentType = undefined;
     this.set(options);
   }