diff --git a/src/Common/CheckoutVaildValue.ts b/src/Common/CheckoutVaildValue.ts
index 135fffa0b..e9c56261e 100644
--- a/src/Common/CheckoutVaildValue.ts
+++ b/src/Common/CheckoutVaildValue.ts
@@ -534,6 +534,12 @@ export namespace CheckoutValid
                     return "表达式不能有逗号";
                 if (!isNum(v))
                     return "数值不能为空且必须为数字";
+            case EBoardKeyList.SpliteHeight:
+            case EBoardKeyList.SpliteWidth:
+            case EBoardKeyList.SpliteThickness:
+                if (v && isNaN(safeEval(v, { L: 1, H: 1, W: 1 })))
+                    return `拆单尺寸表达式错误,表达式:${v}`;
+                return "";
             default:
                 return "";
         }