diff --git a/CHANGELOG.zh_CN.md b/CHANGELOG.zh_CN.md
index 1f763de97ad676ea045135a8eea702f55dd931ca..8b43bf28fc55440aad2a60e5190a0352e0e571f7 100644
--- a/CHANGELOG.zh_CN.md
+++ b/CHANGELOG.zh_CN.md
@@ -7,6 +7,7 @@
   - 修复 selection-change 事件在取消勾选时未能正确触发的问题
   - 修复浅色主题下的全屏状态背景颜色不正确的问题
 - **Qrcode** 修复二维码组件在创建时未能及时绘制的问题
+- **BasicModal** 修复`helpMessage`属性不起作用的问题
 
 ## 2.7.0(2021-08-03)
 
diff --git a/src/components/Modal/src/BasicModal.vue b/src/components/Modal/src/BasicModal.vue
index 4a1fad3bfe75632aadd64a0f196ae90912bcd31c..a46a326c2dd0747c5c0da50a53b452bfaef9fcad 100644
--- a/src/components/Modal/src/BasicModal.vue
+++ b/src/components/Modal/src/BasicModal.vue
@@ -140,9 +140,9 @@
           wrapClassName: unref(getWrapClassName),
         };
         if (unref(fullScreenRef)) {
-          return omit(attr, 'height');
+          return omit(attr, ['height', 'title']);
         }
-        return attr;
+        return omit(attr, 'title');
       });
 
       const getWrapperHeight = computed(() => {