diff --git a/src/main/java/com/ai/da/service/impl/DesignItemServiceImpl.java b/src/main/java/com/ai/da/service/impl/DesignItemServiceImpl.java
index 4a5f5841..7072ffa8 100644
--- a/src/main/java/com/ai/da/service/impl/DesignItemServiceImpl.java
+++ b/src/main/java/com/ai/da/service/impl/DesignItemServiceImpl.java
@@ -690,6 +690,9 @@ public class DesignItemServiceImpl extends ServiceImpl<DesignItemMapper, DesignI
     @Override
     @Transactional(rollbackFor = Exception.class)
     public DesignSingleVO designSingleIncludeLayers(DesignSingleIncludeLayersDTO designSingleIncludeLayersDTO) {
+        if (!designSingleIncludeLayersDTO.getDesignType().equals("merge") && !designSingleIncludeLayersDTO.getDesignType().equals("default")) {
+            throw new BusinessException("The value of DesignType can only be 'default' or 'merge' ");
+        }
         // 记录入参 base64数据太长，所以这里去掉
         DesignSingleIncludeLayersDTO clone = SerializationUtils.clone(designSingleIncludeLayersDTO);
         clone.getDesignSingleItemDTOList().forEach(i -> {
@@ -1379,6 +1382,9 @@ public class DesignItemServiceImpl extends ServiceImpl<DesignItemMapper, DesignI
                 }
             }
 
+            if (Objects.isNull(designSingleItem.getPrintObject()) || Objects.isNull(designSingleItem.getPrintObject().getPrints())) {
+                return;
+            }
             // 添加print到library
             designSingleItem.getPrintObject().getPrints().forEach(print -> {
                 if (!StringUtil.isNullOrEmpty(print.getDesignType()) && print.getDesignType().equals("Collection")) {