Is it illegal for the police to check their wives?

It is definitely illegal for a husband to check his identity card information without his wife's consent through the internal relations of the Public Security Bureau.

Any investigation measures or activities, whether public or secret, must be carried out in accordance with the law, and they must never act on their own or do whatever they want. The police must verify personal information through formal channels and obtain approval before implementation. When the public security organ deems it necessary, it can inquire about the complete information of citizens, including identity information, family members information limited to the same family members who live with them, marriage information, crime information, etc.

According to the relevant regulations, anyone who commits the crime of infringing citizens' personal information shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention, and shall also or only be fined. Because of the ninth amendment of the criminal law, it was changed to the crime of infringing citizens' personal information. The crime of infringing citizens' personal information is generally an act of selling or providing citizens' personal information to others, if the circumstances are serious, or selling or providing citizens' personal information obtained in the course of performing their duties or providing services to others. In violation of the relevant provisions of the state, if the circumstances are serious, the people's court shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention, and shall also or only be fined.

Legal basis:

People's Republic of China (PRC) Civil Code

Article 1032

Natural persons have the right to privacy. No organization or individual may infringe upon the privacy rights of others by spying, harassing, exposing or making public.

Privacy is the private space, private activities and private information that natural people live in peace and don't want to be known by others.