Legal analysis: It is not illegal. The prepaid cards issued by restaurants are single-use commercial prepaid cards. Single-use cards refer to prepaid vouchers that are limited to the payment of goods or services within the enterprise or the group to which the enterprise belongs or the franchise system of the same brand, including physical cards with magnetic stripe cards, chip cards and paper coupons as carriers and virtual cards with passwords, serial numbers, graphics and biometric information as carriers. Theoretically, the single-use prepaid card only needs to be filed with the Ministry of Commerce, but the scale of the general restaurant is nobody's business, and the key point of illegal fund-raising is to promise to repay the principal and interest or give a return to the investor in money, in kind and other ways within a certain period of time to raise funds. There is a clear difference between the two. One is used to exchange services and goods, and the other is used for investment and profit.

Legal basis: Measures for the Administration of Food Hygiene License

Article 11 Any unit or individual engaged in food production and marketing activities who applies for a hygiene license shall meet the requirements of the corresponding food hygiene laws, regulations, rules, standards and norms, and have conditions suitable for their food production and marketing activities.

Article 12 To apply for food production and processing, the following conditions must be met:

(1) Full-time and part-time food hygiene managers with health management system, organization and professional training;

(2) Having factories, facilities, equipment and environment that are suitable for food production and processing and meet the hygiene requirements;

(3) having the conditions and measures to control pollution in the technological process and production and processing;

(4) raw and auxiliary materials, tools, containers and packaging materials for production that meet the hygiene requirements;

(5) Having institutions, personnel and necessary instruments and equipment capable of testing food;

(6) The employees have passed the pre-job training and health examination;

(7) Other conditions stipulated by the provincial health administrative department.

Article 13 To apply for engaging in food business, the following conditions must be met:

(1) Full-time and part-time food hygiene managers with health management system, organization and professional training;

(2) Having business premises, facilities, equipment and environment that are suitable for food business and meet hygiene requirements;

(3) Having the conditions and measures to control pollution in the process of food storage, transportation and sales;

(4) The employees have passed the pre-job training and health examination;

(5) Other conditions stipulated by the provincial health administrative department.

Article 14 To apply for catering and canteen management, the following conditions must be met:

(1) Full-time and part-time food hygiene managers with health management system, organization and professional training;

(2) Having processing and business premises, cleaning and disinfection facilities and equipment that meet the sanitary conditions and requirements;

(3) Having the conditions and measures to control pollution in the process of food procurement, storage and processing;

(4) The employees have passed the pre-job training and health examination;

(5) Other conditions stipulated by the provincial health administrative department.

Article 15 The materials submitted for applying for a health permit shall be true and complete, and the specific requirements shall be uniformly stipulated by the provincial health administrative department.