diff --git a/packages/plugins/@nocobase/plugin-users/src/server/migrations/20220818072639-add-users-phone-constraint.ts b/packages/plugins/@nocobase/plugin-users/src/server/migrations/20220818072639-add-users-phone-constraint.ts
index f52a04b0ac..250bbe8c4f 100644
--- a/packages/plugins/@nocobase/plugin-users/src/server/migrations/20220818072639-add-users-phone-constraint.ts
+++ b/packages/plugins/@nocobase/plugin-users/src/server/migrations/20220818072639-add-users-phone-constraint.ts
@@ -12,15 +12,17 @@ export default class AddUsersPhoneMigration extends Migration {
         {
           type: 'string',
           name: 'phone',
-          unique: true,
         },
       ],
     });
     const tableNameWithSchema = collection.getTableNameWithSchema();
-    const field = collection.getField('username');
-    await this.db.sequelize.getQueryInterface().addColumn(tableNameWithSchema, field.columnName(), {
-      type: DataTypes.STRING,
-    });
+    const field = collection.getField('phone');
+    const exists = await field.existsInDb();
+    if (!exists) {
+      await this.db.sequelize.getQueryInterface().addColumn(tableNameWithSchema, field.columnName(), {
+        type: DataTypes.STRING,
+      });
+    }
     await this.db.sequelize.getQueryInterface().addConstraint(tableNameWithSchema, {
       type: 'unique',
       fields: [field.columnName()],
diff --git a/packages/plugins/@nocobase/plugin-users/src/server/migrations/20230802170800-add-username-constraint.ts b/packages/plugins/@nocobase/plugin-users/src/server/migrations/20230802170800-add-username-constraint.ts
index 9e3a5104d0..b6aa21fe09 100644
--- a/packages/plugins/@nocobase/plugin-users/src/server/migrations/20230802170800-add-username-constraint.ts
+++ b/packages/plugins/@nocobase/plugin-users/src/server/migrations/20230802170800-add-username-constraint.ts
@@ -12,15 +12,17 @@ export default class AddUserNameMigration extends Migration {
         {
           type: 'string',
           name: 'username',
-          unique: true,
         },
       ],
     });
     const tableNameWithSchema = collection.getTableNameWithSchema();
     const field = collection.getField('username');
-    await this.db.sequelize.getQueryInterface().addColumn(tableNameWithSchema, field.columnName(), {
-      type: DataTypes.STRING,
-    });
+    const exists = await field.existsInDb();
+    if (!exists) {
+      await this.db.sequelize.getQueryInterface().addColumn(tableNameWithSchema, field.columnName(), {
+        type: DataTypes.STRING,
+      });
+    }
     await this.db.sequelize.getQueryInterface().addConstraint(tableNameWithSchema, {
       type: 'unique',
       fields: [field.columnName()],