Legal analysis: It is illegal to sell masks privately, because masks are also medical devices. According to national regulations, if you want to operate, you must have relevant qualifications and obtain a business license. Therefore, general personnel are not allowed to sell privately. If the masks sold are genuine and the quality meets the standards, they may be suspected of illegal business operations.

Legal basis: Article 225 of the "Criminal Law of the People's Republic of China" The following is a fixed-term imprisonment of not less than five years or not, and a fine of not less than one time but not more than five times the illegal income, or a fine of not less than one time but not more than five times the illegal income, or confiscation of property. :

1. Operating a franchise or selling recreational items or other restricted items as stipulated by laws and administrative regulations

without permission.

2. Buying and selling import and export licenses, import and export certificates of origin, and other business licenses or approval documents stipulated in laws and administrative regulations.

3. Illegal operations of securities, futures, and insurance businesses without approval from relevant state authorities, or illegal activities of fund payment and settlement business.

4. Other illegal business activities that seriously disrupt market order.