diff --git a/src/editor/core/command/CommandAdapt.ts b/src/editor/core/command/CommandAdapt.ts
index e848279..1b888a4 100644
--- a/src/editor/core/command/CommandAdapt.ts
+++ b/src/editor/core/command/CommandAdapt.ts
@@ -789,7 +789,7 @@ export class CommandAdapt {
       const row = rowList[rowIndex]
       offsetX = row?.offsetX || 0
     }
-    const innerWidth = this.draw.getOriginalInnerWidth() - offsetX
+    const innerWidth = this.draw.getContextInnerWidth() - offsetX
     // colgroup
     const colgroup: IColgroup[] = []
     const colWidth = innerWidth / col
diff --git a/src/editor/core/draw/Draw.ts b/src/editor/core/draw/Draw.ts
index 556208e..833d3d1 100644
--- a/src/editor/core/draw/Draw.ts
+++ b/src/editor/core/draw/Draw.ts
@@ -390,6 +390,18 @@ export class Draw {
     return width - margins[1] - margins[3]
   }
 
+  public getContextInnerWidth(): number {
+    const positionContext = this.position.getPositionContext()
+    if (positionContext.isTable) {
+      const { index, trIndex, tdIndex } = positionContext
+      const elementList = this.getOriginalElementList()
+      const td = elementList[index!].trList![trIndex!].tdList[tdIndex!]
+      const tdPadding = this.getTdPadding()
+      return td!.width! - tdPadding[1] - tdPadding[3]
+    }
+    return this.getOriginalInnerWidth()
+  }
+
   public getMargins(): IMargin {
     return <IMargin>this.getOriginalMargins().map(m => m * this.options.scale)
   }