diff --git a/modules/i3plus-pojo-base/src/main/java/cn/estsh/i3plus/pojo/base/jpa/daoimpl/BaseRepositoryImpl.java b/modules/i3plus-pojo-base/src/main/java/cn/estsh/i3plus/pojo/base/jpa/daoimpl/BaseRepositoryImpl.java
index 4505d1a..c55e93f 100644
--- a/modules/i3plus-pojo-base/src/main/java/cn/estsh/i3plus/pojo/base/jpa/daoimpl/BaseRepositoryImpl.java
+++ b/modules/i3plus-pojo-base/src/main/java/cn/estsh/i3plus/pojo/base/jpa/daoimpl/BaseRepositoryImpl.java
@@ -1524,7 +1524,7 @@ public class BaseRepositoryImpl<T, ID extends Serializable> extends SimpleJpaRep
     @Override
     public double findMaxByProperties(String sumPropertyName, String groupByName, String[] paramName, Object[] paramValue) {
         if ((paramName != null) && (paramName.length > 0) && (paramValue != null) && (paramValue.length > 0)) {
-            StringBuffer sb = new StringBuffer("select max(model." + sumPropertyName + ") from " + persistentClass.getName() + " model where 1=1 ");
+            StringBuffer sb = new StringBuffer("select max(CAST(model." + sumPropertyName + " as integer)) from " + persistentClass.getName() + " model where 1=1 ");
             appendQL(sb, paramName, paramValue);
             if(StringUtils.isNotBlank(groupByName)){
                 sb.append(" group by model." + groupByName);