diff --git a/bonus-modules/bonus-material-mall/src/main/java/com/bonus/material/book/service/impl/BookCarServiceImpl.java b/bonus-modules/bonus-material-mall/src/main/java/com/bonus/material/book/service/impl/BookCarServiceImpl.java
index cfbcb96..43bb5f3 100644
--- a/bonus-modules/bonus-material-mall/src/main/java/com/bonus/material/book/service/impl/BookCarServiceImpl.java
+++ b/bonus-modules/bonus-material-mall/src/main/java/com/bonus/material/book/service/impl/BookCarServiceImpl.java
@@ -100,7 +100,7 @@ public class BookCarServiceImpl implements BookCarService {
      */
     @Override
     public AjaxResult deleteById(BookCarInfoDto devInfo) {
-        if (devInfo == null || StringUtils.isEmpty(devInfo.getMaId())) {
+        if (devInfo == null || devInfo.getId() == null) {
             return AjaxResult.error("传入设备ID为空，请刷新后重试");
         }
         int result = bookCarMapper.deleteById(devInfo.getId());