diff --git a/packages/database/src/mysql/index.js b/packages/database/src/mysql/index.js
index 2c681e1cb..483c735bf 100644
--- a/packages/database/src/mysql/index.js
+++ b/packages/database/src/mysql/index.js
@@ -64,7 +64,7 @@ class MyslAdapter {
             const sql = `CREATE TABLE ${tableName} 
             (id INT AUTO_INCREMENT PRIMARY KEY, 
             ref varchar(255) NOT NULL,
-            keyword varchar(255) NOT NULL,
+            keyword varchar(255) NULL,
             answer longtext NOT NULL,
             refSerialize varchar(255) NOT NULL,
             phone varchar(255) NOT NULL,