diff --git a/src/models.py b/src/models.py
index 4e0e7aa..d96dacd 100644
--- a/src/models.py
+++ b/src/models.py
@@ -152,7 +152,7 @@ async def _create_tables(pool: aiomysql.Pool):
                     `id` INT AUTO_INCREMENT PRIMARY KEY,
                     `username` VARCHAR(45) UNIQUE NOT NULL,
                     `password_hash` VARCHAR(256) NOT NULL,
-                    `role` VARCHAR(20) DEFAULT 'operator' COMMENT 'admin/manager/operator',
+                    `role` VARCHAR(20) DEFAULT 'operator' COMMENT 'admin/manager/operator/analyst',
                     `is_active` TINYINT DEFAULT 1,
                     `create_time` DATETIME DEFAULT CURRENT_TIMESTAMP
                 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4
@@ -348,7 +348,7 @@ async def _create_tables(pool: aiomysql.Pool):
             try:
                 await cur.execute(
                     "ALTER TABLE tb_user MODIFY COLUMN `role` VARCHAR(20) DEFAULT 'operator' "
-                    "COMMENT 'admin/manager/operator'"
+                    "COMMENT 'admin/manager/operator/analyst'"
                 )
             except Exception:
                 pass