diff --git a/hutool-db/src/main/java/org/dromara/hutool/db/Db.java b/hutool-db/src/main/java/org/dromara/hutool/db/Db.java
index 3ca3f6f49..444241fd7 100644
--- a/hutool-db/src/main/java/org/dromara/hutool/db/Db.java
+++ b/hutool-db/src/main/java/org/dromara/hutool/db/Db.java
@@ -77,7 +77,7 @@ public class Db extends AbstractDb<Db> {
 	 */
 	public static Db of(final DbConfig config){
 		final DSWrapper ds = DSUtil.createDS(config);
-		final Dialect dialect = ObjUtil.defaultIfNull(config.getDialect(), DialectFactory.newDialect(ds));
+		final Dialect dialect = DialectFactory.newDialect(ds);
 		return of(ds, dialect);
 	}
 
diff --git a/hutool-db/src/main/java/org/dromara/hutool/db/dialect/DialectFactory.java b/hutool-db/src/main/java/org/dromara/hutool/db/dialect/DialectFactory.java
index 0f9ca8e3c..3a39c4183 100644
--- a/hutool-db/src/main/java/org/dromara/hutool/db/dialect/DialectFactory.java
+++ b/hutool-db/src/main/java/org/dromara/hutool/db/dialect/DialectFactory.java
@@ -36,14 +36,18 @@ public class DialectFactory {
 	}
 
 	/**
-	 * 根据驱动名创建方言<br>
+	 * 创建方言，如果配置中用户指定了方言，则直接返回用户指定的方言，否则根据驱动名等信息自动创建方言<br>
 	 * 驱动名是不分区大小写完全匹配的
 	 *
 	 * @param dbConfig 数据库配置
 	 * @return 方言
 	 */
 	public static Dialect newDialect(final DbConfig dbConfig) {
-		final Dialect dialect = internalNewDialect(dbConfig);
+		Dialect dialect = dbConfig.getDialect();
+		if(null == dialect){
+			dialect = internalNewDialect(dbConfig);
+		}
+
 		LogUtil.debug("Use Dialect: [{}].", dialect.getClass().getSimpleName());
 		return dialect;
 	}