This model adopts a new generation of information technology such as the Internet of Things, artificial intelligence, and big data. It can realize gram-based pricing, self-service weighing, and automatic settlement, which greatly shortens the dining process and effectively alleviates the low efficiency of dining during peak hours and the choice of dishes. Multiple problems such as less waste and more. At the same time, the system is equipped with multi-functions such as parent-child account, nutrition report, scheduled meal, etc., which is conducive to meeting the diverse needs of users and the operational requirements of the canteen.