diff --git a/components/table/style/index.less b/components/table/style/index.less
index b12e70af67..184099bd6c 100644
--- a/components/table/style/index.less
+++ b/components/table/style/index.less
@@ -412,12 +412,13 @@
     float: left;
     box-sizing: border-box;
 
-    width: ceil(@font-size-sm * 1.4);
-    height: ceil(@font-size-sm * 1.4);
+    width: ceil((@font-size-sm * 1.4 - @border-width-base * 3) / 2) * 2 + @border-width-base * 3;
+    height: ceil((@font-size-sm * 1.4 - @border-width-base * 3) / 2) * 2 + @border-width-base * 3;
     padding: 0;
     color: inherit;
-    line-height: @font-size-sm;
-    vertical-align: floor((@font-size-base - ceil(@font-size-sm * 1.4)) / 2);
+    line-height: ceil((@font-size-sm * 1.4 - @border-width-base * 3) / 2) * 2 + @border-width-base *
+      3;
+    // vertical-align: floor((@font-size-base - ceil(@font-size-sm * 1.4)) / 2);
     background: @table-expand-icon-bg;
     border: @border-width-base @border-style-base @border-color-split;
     border-radius: @border-radius-base;
@@ -440,7 +441,7 @@
     }
 
     &::before {
-      top: 7px;
+      top: ceil((@font-size-sm * 1.4 - @border-width-base * 3) / 2);
       right: 3px;
       left: 3px;
       height: @border-width-base;
@@ -449,7 +450,7 @@
     &::after {
       top: 3px;
       bottom: 3px;
-      left: 7px;
+      left: ceil((@font-size-sm * 1.4 - @border-width-base * 3) / 2);
       width: @border-width-base;
       transform: rotate(90deg);
     }
@@ -474,7 +475,8 @@
     }
 
     .@{table-prefix-cls}-row-indent + & {
-      margin-top: (@font-size-base * @line-height-base - ceil(@font-size-sm * 1.4)) / 2;
+      margin-top: (@font-size-base * @line-height-base - @border-width-base * 3) / 2 -
+        ceil((@font-size-sm * 1.4 - @border-width-base * 3) / 2);
       margin-right: @padding-xs;
     }
   }