diff --git a/packages/components/grid-item/grid-item.less b/packages/components/grid-item/grid-item.less
index 1143750641..2714eede75 100644
--- a/packages/components/grid-item/grid-item.less
+++ b/packages/components/grid-item/grid-item.less
@@ -41,6 +41,8 @@
   }
 
   &__content {
+    width: 100%;
+    box-sizing: border-box;
     display: flex;
     flex-direction: column;
     align-items: center;
diff --git a/packages/tdesign-miniprogram/.changelog/pr-4280.md b/packages/tdesign-miniprogram/.changelog/pr-4280.md
new file mode 100644
index 0000000000..b3fdc2beac
--- /dev/null
+++ b/packages/tdesign-miniprogram/.changelog/pr-4280.md
@@ -0,0 +1,6 @@
+---
+pr_number: 4280
+contributor: anlyyao
+---
+
+- fix(Grid): 修复右侧 `border` 边框在浏览器及部分机型上渲染错误 @anlyyao ([#4280](https://github.com/Tencent/tdesign-miniprogram/pull/4280))