diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/utils/MongoUtil.java b/ruoyi-common/src/main/java/com/ruoyi/common/utils/MongoUtil.java
index 347c882..bd7d839 100644
--- a/ruoyi-common/src/main/java/com/ruoyi/common/utils/MongoUtil.java
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/utils/MongoUtil.java
@@ -531,7 +531,7 @@ public class MongoUtil {
       ReflectUtil.setFieldValue(entity, f, IdUtils.nextId(entity.getClass()).intValue());
     } else if (f.getType() == Long.class) {
       if (type == FillIdType.date_id) {
-        ReflectUtil.setFieldValue(entity, f, IdUtils.nextDateIdLong(entity.getClass(), 18));
+        ReflectUtil.setFieldValue(entity, f, IdUtils.nextDateIdLong(entity.getClass(), 17));
       } else {
         if (!IdUtils.nextIdInit(entity.getClass())) {
           IdUtils.nextIdInit(entity.getClass(), findMaxId(entity.getClass()));
@@ -540,7 +540,7 @@ public class MongoUtil {
       }
     } else if (f.getType() == String.class) {
       if (type == FillIdType.date_id) {
-        ReflectUtil.setFieldValue(entity, f, IdUtils.nextDateId(entity.getClass(), 18));
+        ReflectUtil.setFieldValue(entity, f, IdUtils.nextDateId(entity.getClass(), 17));
       } else {
         ReflectUtil.setFieldValue(entity, f, UUID.fastUUID().toString(true));
       }