diff --git a/src/main/java/com/yanghuanglin/seq/dao/impl/SequencesBase.java b/src/main/java/com/yanghuanglin/seq/dao/impl/SequencesBase.java
index 89dafce..eb3013a 100644
--- a/src/main/java/com/yanghuanglin/seq/dao/impl/SequencesBase.java
+++ b/src/main/java/com/yanghuanglin/seq/dao/impl/SequencesBase.java
@@ -49,7 +49,6 @@ public abstract class SequencesBase {
                     sql = sql.replaceAll("`seq`", String.format("`%s`", tableConfig.getSeqColumn()));
                     sql = sql.replaceAll("`create_time`", String.format("`%s`", tableConfig.getCreateTimeColumn()));
                     break;
-                case Dameng:
                 case DM_DBMS:
                 case PostgreSQL:
                 case KingbaseES:
@@ -79,7 +78,6 @@ public abstract class SequencesBase {
             case MySQL:
                 break;
             case PostgreSQL:
-            case Dameng:
             case DM_DBMS:
             case KingbaseES:
                 sqlString = sqlString.replaceAll("`(.+?)`", "\"$1\"");
diff --git a/src/main/java/com/yanghuanglin/seq/enums/DbType.java b/src/main/java/com/yanghuanglin/seq/enums/DbType.java
index 6b7b4b3..ece0f15 100644
--- a/src/main/java/com/yanghuanglin/seq/enums/DbType.java
+++ b/src/main/java/com/yanghuanglin/seq/enums/DbType.java
@@ -4,8 +4,6 @@ public enum DbType {
     //MySQL数据库
     MySQL("mysql"),
     //达梦数据库
-    Dameng("dm"),
-    //达梦数据库
     DM_DBMS("dm"),
     //人大金仓数据库
     KingbaseES("pgsql"),