diff --git a/core/core-frontend/src/views/chart/components/js/panel/common/common_table.ts b/core/core-frontend/src/views/chart/components/js/panel/common/common_table.ts
index a13fecd54e..32bf06f53f 100644
--- a/core/core-frontend/src/views/chart/components/js/panel/common/common_table.ts
+++ b/core/core-frontend/src/views/chart/components/js/panel/common/common_table.ts
@@ -52,7 +52,8 @@ export function getCustomTheme(chart: Chart): S2Theme {
     },
     splitLine: {
       horizontalBorderColor: borderColor,
-      verticalBorderColor: borderColor
+      verticalBorderColor: borderColor,
+      horizontalBorderWidth: 0
     },
     cornerCell: {
       cell: {
@@ -276,7 +277,7 @@ export function getCustomTheme(chart: Chart): S2Theme {
         }
         merge(theme, tmpTheme)
       }
-      if (tableHeader.showVerticalBorder === false) {
+      if (tableHeader.showVerticalBorder === false && tableHeader.showTableHeader !== false) {
         const tmpTheme: S2Theme = {
           splitLine: {
             verticalBorderColor: tableHeaderBgColor,
@@ -287,6 +288,12 @@ export function getCustomTheme(chart: Chart): S2Theme {
               verticalBorderColor: tableHeaderBgColor,
               verticalBorderWidth: 0
             }
+          },
+          cornerCell: {
+            cell: {
+              verticalBorderColor: tableHeaderBgColor,
+              verticalBorderWidth: 0
+            }
           }
         }
         merge(theme, tmpTheme)