diff --git a/api/model/pricing_plans.js b/api/model/pricing_plans.js
index deb6f37..4cb1652 100644
--- a/api/model/pricing_plans.js
+++ b/api/model/pricing_plans.js
@@ -50,9 +50,26 @@ module.exports = (db) => {
     },
     features: {
       comment: '功能特性列表（JSON字符串数组）',
-      type: Sequelize.TEXT,
+      type: Sequelize.JSON(),
       allowNull: false,
-      defaultValue: '[]'
+      defaultValue: [],
+      get: function () {
+        const value = this.getDataValue('features');
+        if (!value) return null;
+        if (typeof value === 'string') {
+          return JSON.parse(value);
+        }
+        return value;
+      },
+      set: function (value) {
+        if (value === null || value === undefined) {
+          this.setDataValue('features', null);
+        } else if (typeof value === 'string') {
+          this.setDataValue('features', value);
+        } else {
+          this.setDataValue('features', JSON.stringify(value));
+        }
+      },
     },
     featured: {
       comment: '是否为推荐套餐（1=推荐，0=普通）',