diff --git a/platform-dal/src/main/java/com/lyms/platform/query/PatientsQuery.java b/platform-dal/src/main/java/com/lyms/platform/query/PatientsQuery.java
index 42e1124..901cf59 100644
--- a/platform-dal/src/main/java/com/lyms/platform/query/PatientsQuery.java
+++ b/platform-dal/src/main/java/com/lyms/platform/query/PatientsQuery.java
@@ -864,7 +864,7 @@ public class PatientsQuery extends BaseQuery implements IConvertToNativeQuery {
             MongoCondition condition2 = MongoCondition.newInstance("buildType", buildTypeList, MongoOper.IN);
             condition = condition.orCondition(new MongoCondition[]{condition1, condition2});
         }
-        if(extEnable){
+        if(null!=extEnable){
             condition.and("enable",extEnable,MongoOper.EXISTS);
         }