diff --git a/CHANGELOG.zh_CN.md b/CHANGELOG.zh_CN.md
index 26671abdb77754885ee0c12601ffe8844a055e95..1f763de97ad676ea045135a8eea702f55dd931ca 100644
--- a/CHANGELOG.zh_CN.md
+++ b/CHANGELOG.zh_CN.md
@@ -5,6 +5,7 @@
   - 修复`CellFormat`无法使用`Map`类型数据的问题
   - 修复可编辑单元格未能正确显示`0`值的问题
   - 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
 
 ## 2.7.0(2021-08-03)
diff --git a/src/design/theme.less b/src/design/theme.less
index cde98c497d4b359385cff68698c36cdc94ccaff6..fb1e61e937239a4f5f8727ac6f4cb70d48cb1346 100644
--- a/src/design/theme.less
+++ b/src/design/theme.less
@@ -21,6 +21,10 @@ html[data-theme='light'] {
     background-color: #fffbe6;
     border: 1px solid #ffe58f;
   }
+
+  :not(:root):fullscreen::backdrop {
+    background-color: @layout-body-background !important;
+  }
 }
 
 [data-theme='dark'] {
diff --git a/src/views/demo/table/FormTable.vue b/src/views/demo/table/FormTable.vue
index 05c34e0f6d10e9f02cdea5efa1a53c11b13a18a0..23300aa7c92e476e0b1284ba11fa49c12344c963 100644
--- a/src/views/demo/table/FormTable.vue
+++ b/src/views/demo/table/FormTable.vue
@@ -41,6 +41,7 @@
         useSearchForm: true,
         formConfig: getFormConfig(),
         showTableSetting: true,
+        tableSetting: { fullScreen: true },
         showIndexColumn: false,
         rowKey: 'id',
       });