diff --git a/src/DatabaseServices/Board.ts b/src/DatabaseServices/Board.ts
index 950ee98ab..71e02329c 100644
--- a/src/DatabaseServices/Board.ts
+++ b/src/DatabaseServices/Board.ts
@@ -65,7 +65,7 @@ export class Board extends ExtureSolid
     //板件排钻表,与之碰撞板件为key
     private m_DrillList: Map<ObjectId, ObjectId[][]> = new Map();
     private layerNails: ObjectId[] = [];
-    constructor(shape?: Shape, thickness?: number)
+    constructor()
     {
         super();
         this.InitBoardData();