diff --git a/src/tableFormatter.ts b/src/tableFormatter.ts
index 64a400aa..da01f6a9 100644
--- a/src/tableFormatter.ts
+++ b/src/tableFormatter.ts
@@ -138,9 +138,10 @@ class MarkdownDocumentFormatter implements vscode.DocumentFormattingEditProvider
         const fieldRegExp = new RegExp(/((\\\||[^\|])*)\|/gu);
         // Emoji and CJK characters with double visual width (width 2)
         // https://www.ling.upenn.edu/courses/Spring_2003/ling538/UnicodeRanges.html
-        // Extended_Pictographic includes all graphical emoji chars
+        // Extended_Pictographic includes all graphical emoji chars (e.g. ✅ ⬜ ❌)
         // CJK ranges: U+3000-U+9FFF, U+AC00-U+D7AF, U+FF01-U+FF60
-        const doubleWidthRegex = /\p{Extended_Pictographic}|[\u3000-\u9fff\uac00-\ud7af\uff01-\uff60]/gu;
+        // Arrows (U+2190-U+21FF, e.g. ↑ ↓ ← →) are rendered double-width in CJK contexts
+        const doubleWidthRegex = /\p{Extended_Pictographic}|[\u1100-\u115F\u2190-\u21FF\u2329\u232A\u2E80-\u2FFF\u3000-\u9FFF\uA000-\uA4CF\uA960-\uA97F\uAC00-\uD7FF\uF900-\uFAFF\uFE10-\uFE19\uFE30-\uFE6B\uFF01-\uFF60\uFFE0-\uFFE6\u{16FE0}-\u{16FF6}\u{17000}-\u{18D1E}\u{1AFF0}-\u{1AFFE}\u{1B000}-\u{1B2FB}\u{1D300}-\u{1D376}\u{1F200}-\u{1F265}\u{20000}-\u{3FFFD}]/gu;
 
         const lines = rows.map((row, iRow) => {
             // Normalize
@@ -223,7 +224,7 @@ class MarkdownDocumentFormatter implements vscode.DocumentFormattingEditProvider
                 const visualWidth = colWidth[iCol];
                 let jsLength = splitter.splitGraphemes(cell + ' '.repeat(visualWidth)).slice(0, visualWidth).join('').length;
 
-                // Subtract double-width characters (emoji and CJK)
+                // Subtract double-width characters (emoji, CJK, and wide symbols)
                 jsLength -= cell.match(doubleWidthRegex)?.length ?? 0;
 
                 return this.alignText(cell, colAlign[iCol], jsLength);
diff --git a/src/test/suite/integration/tableFormatter.test.ts b/src/test/suite/integration/tableFormatter.test.ts
index 12debb20..0b4cd3c5 100644
--- a/src/test/suite/integration/tableFormatter.test.ts
+++ b/src/test/suite/integration/tableFormatter.test.ts
@@ -471,4 +471,24 @@ suite("Table formatter.", () => {
             ],
             new Selection(0, 0, 0, 0));
     });
+
+    test("Wide symbols in table cells", () => {
+        return testCommand('editor.action.formatDocument',
+            [
+                '| 阶段 | 状态 |',
+                '| --- | --- |',
+                '| 需求定义 | ✅ 完成 |',
+                '| 测试 | ⬜ 待开始 |',
+                '| 方向 | ↑↓←→ |'
+            ],
+            new Selection(0, 0, 0, 0),
+            [
+                '| 阶段     | 状态      |',
+                '| -------- | --------- |',
+                '| 需求定义 | ✅ 完成   |',
+                '| 测试     | ⬜ 待开始 |',
+                '| 方向     | ↑↓←→  |'
+            ],
+            new Selection(0, 0, 0, 0));
+    });
 });