The process of buying and selling bank cards may be accompanied by illegal activities such as illegally holding a large number of bank cards, which is suspected of obstructing credit card management. Article 177 1 of the Criminal Law of People's Republic of China (PRC) stipulates: illegal possession of other people's credit cards, with a large amount; Using false identification to defraud credit cards; Whoever buys or sells forged credit cards for others or fraudulently obtains credit cards with false identification shall be investigated for criminal responsibility according to law. Once this crime is established, the maximum penalty is more than 3 years 10 years, and a fine of more than 20,000 yuan and less than 200,000 yuan.

Buying and selling bank cards may also involve the crime of selling resident identity cards. Article 17 of the Law on Resident Identity Cards stipulates that someone uses another person's resident identity card or uses a fraudulent resident identity card; Whoever buys, sells or uses forged or altered resident identity cards shall be investigated for criminal responsibility according to law.