diff --git a/jeecg-module-main/src/main/java/org/jeecg/modules/kc/detection/service/impl/KcDetectionDetailedServiceImpl.java b/jeecg-module-main/src/main/java/org/jeecg/modules/kc/detection/service/impl/KcDetectionDetailedServiceImpl.java
index 6e2d5ce2..52445347 100644
--- a/jeecg-module-main/src/main/java/org/jeecg/modules/kc/detection/service/impl/KcDetectionDetailedServiceImpl.java
+++ b/jeecg-module-main/src/main/java/org/jeecg/modules/kc/detection/service/impl/KcDetectionDetailedServiceImpl.java
@@ -229,7 +229,14 @@ public class KcDetectionDetailedServiceImpl extends ServiceImpl<KcDetectionDetai
 					detectionDetailed.setDetectionOutImgRes(rJson);
 					//解析获取数
 					JSONObject object= JSON.parseObject(rJson);
-					detectionDetailed.setNum(object.getInteger("person_num"));
+					Integer num = object.getInteger("person_num");
+					if(num == null){
+						if(detectionDetailed.getNum() == null){
+							detectionDetailed.setNum(0);
+						}
+					} else {
+						detectionDetailed.setNum(num);
+					}
 				}
 
 				Integer allNum = detectionMain.getAllNum();