diff --git a/hutool-db/src/main/java/cn/hutool/db/sql/SqlUtil.java b/hutool-db/src/main/java/cn/hutool/db/sql/SqlUtil.java
index ff9da9b79..3a4cb0d5d 100644
--- a/hutool-db/src/main/java/cn/hutool/db/sql/SqlUtil.java
+++ b/hutool-db/src/main/java/cn/hutool/db/sql/SqlUtil.java
@@ -270,7 +270,8 @@ public class SqlUtil {
 	 */
 	public static String removeOuterOrderBy(final String selectSql) {
 		// 去除order by 子句
-		return ReUtil.getGroup1(PATTERN_ORDER_BY, selectSql);
+		String sql = ReUtil.getGroup1(PATTERN_ORDER_BY, selectSql);
+		return sql == null ? selectSql : sql;
 	}
 
 	/**
diff --git a/hutool-db/src/test/java/cn/hutool/db/sql/Issue4066Test.java b/hutool-db/src/test/java/cn/hutool/db/sql/Issue4066Test.java
index 54587fb12..9dd41662a 100644
--- a/hutool-db/src/test/java/cn/hutool/db/sql/Issue4066Test.java
+++ b/hutool-db/src/test/java/cn/hutool/db/sql/Issue4066Test.java
@@ -28,4 +28,15 @@ public class Issue4066Test {
 
 		assertEquals("SELECT id, name, age FROM users WHERE status = 'active'", result);
 	}
+
+	/**
+	 * 测试不含Order by的语句
+	 */
+	@Test
+	public void removeOuterOrderByTest3() {
+		final String sql = "SELECT * FROM users";
+		final String result = SqlUtil.removeOuterOrderBy(sql);
+
+		assertEquals("SELECT * FROM users", result);
+	}
 }