diff --git a/src/com/engine/organization/util/RefreshIsUsedUtil.java b/src/com/engine/organization/util/RefreshIsUsedUtil.java
index 74bfdc56..7786d2be 100644
--- a/src/com/engine/organization/util/RefreshIsUsedUtil.java
+++ b/src/com/engine/organization/util/RefreshIsUsedUtil.java
@@ -10,6 +10,7 @@ import com.engine.organization.mapper.staff.StaffMapper;
 import com.engine.organization.mapper.staff.StaffPlanMapper;
 import com.engine.organization.util.db.MapperProxyFactory;
 import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.lang.StringUtils;
 
 import java.util.Arrays;
 import java.util.List;
@@ -47,7 +48,7 @@ public class RefreshIsUsedUtil {
      */
     public static void RefreshLevel(String tableName) {
         List<String> usedIds = MapperProxyFactory.getProxy(LevelMapper.class).listUsedId();
-        usedIds.removeIf(Objects::isNull);
+        usedIds.removeIf(StringUtils::isBlank);
         RefreshIsUsedStatus(tableName, usedIds);
     }
 
@@ -58,7 +59,8 @@ public class RefreshIsUsedUtil {
      */
     public static void RefreshGrade(String tableName) {
         List<String> usedIds = MapperProxyFactory.getProxy(GradeMapper.class).listUsedId();
-        usedIds.removeIf(Objects::isNull);
+        //usedIds.forEach(System.out ::println);
+        usedIds.removeIf(StringUtils::isBlank);
         RefreshIsUsedStatus(tableName, usedIds);
     }
 
@@ -69,7 +71,7 @@ public class RefreshIsUsedUtil {
      */
     public static void RefreshSequence(String tableName) {
         List<String> usedIds = MapperProxyFactory.getProxy(SequenceMapper.class).listUsedId();
-        usedIds.removeIf(Objects::isNull);
+        usedIds.removeIf(StringUtils::isBlank);
         RefreshIsUsedStatus(tableName, usedIds);
     }
 
@@ -80,7 +82,7 @@ public class RefreshIsUsedUtil {
      */
     public static void RefreshStaffPlan(String tableName) {
         List<String> usedIds = MapperProxyFactory.getProxy(StaffPlanMapper.class).listUsedId();
-        usedIds.removeIf(Objects::isNull);
+        usedIds.removeIf(StringUtils::isBlank);
         RefreshIsUsedStatus(tableName, usedIds);
     }
 
@@ -91,7 +93,7 @@ public class RefreshIsUsedUtil {
      */
     public static void RefreshStaff(String tableName) {
         List<String> usedIds = MapperProxyFactory.getProxy(StaffMapper.class).listUsedId();
-        usedIds.removeIf(Objects::isNull);
+        usedIds.removeIf(StringUtils::isBlank);
         RefreshIsUsedStatus(tableName, usedIds);
     }
 
@@ -103,7 +105,7 @@ public class RefreshIsUsedUtil {
      */
     public static void RefreshPostInfo(String tableName) {
         List<String> usedIds = MapperProxyFactory.getProxy(PostInfoMapper.class).listUsedId();
-        usedIds.removeIf(Objects::isNull);
+        usedIds.removeIf(StringUtils::isBlank);
         RefreshIsUsedStatus(tableName, usedIds);
     }
 
@@ -118,7 +120,7 @@ public class RefreshIsUsedUtil {
             List<String> collect = Arrays.stream(String.join(",", usedIds).split(",")).collect(Collectors.toList());
             getRefreshUseMapper().updateIsUsedByIds(tableName, collect, 0);
             getRefreshUseMapper().updateIsUsedByIds(tableName, collect, 1);
-        }else{
+        } else {
             getRefreshUseMapper().initIsUseStatus(tableName);
         }
     }