According to official website, the National Food Fair is a sharing economic model, which allows consumers to experience a green, healthy and environmentally friendly lifestyle while enjoying food. However, in practice, there are also some problems in the national meal replacement plan. Some event organizers did not provide enough free lunch, fruits, snacks and other items, or some people failed to get free lunch because of too many participants or insufficient supply, or the items obtained were not directly proportional to the cost of participating in the event. In addition, some businesses use such activities for publicity, and there are also some commercial purposes, including personal information collection, marketing, advertising exposure and so on. Therefore, the authenticity and benefits of the national meal replacement plan have certain differences and uncertainties.