diff --git a/device/src/main/java/com/njcn/gather/device/device/service/impl/PqDevServiceImpl.java b/device/src/main/java/com/njcn/gather/device/device/service/impl/PqDevServiceImpl.java
index 1726bd71..e276483d 100644
--- a/device/src/main/java/com/njcn/gather/device/device/service/impl/PqDevServiceImpl.java
+++ b/device/src/main/java/com/njcn/gather/device/device/service/impl/PqDevServiceImpl.java
@@ -615,6 +615,12 @@ public class PqDevServiceImpl extends ServiceImpl<PqDevMapper, PqDev> implements
                 if (split.length == 2) {
                     long start = Long.parseLong(split[0]);
                     long end = Long.parseLong(split[1]);
+                    // 避免起始大于结束
+                    if(start > end){
+                        long temp = start;
+                        start = end;
+                        end = temp;
+                    }
                     for (long i = start; i <= end; i++) {
                         PqDev dev = new PqDev();
                         BeanUtil.copyProperties(pqDev, dev);