Under normal circumstances, the police do not need to show their certificates when wearing uniforms, police titles and alarm numbers. Only when they enforce the law in plain clothes do they need to declare and show their police officers' cards.

Article 34 of the Administrative Punishment Law stipulates: "If a law enforcement officer makes a decision on administrative punishment on the spot, he shall show his law enforcement identity certificate to the party concerned."

Article 23 of the People's Police Law stipulates: "People's police must dress in accordance with the regulations, wear people's police signs or hold people's police cards, and keep their police appearance clean and dignified."

It can be seen that the Administrative Punishment Law requires law enforcement officers to show their identity documents when enforcing the law, while the People's Police Law stipulates that the police have two ways to show their identity when performing official duties: one is to dress according to the regulations and wear the people's police logo; Another way is to show the people's police card. The provisions of the Administrative Punishment Law and the People's Police Law on whether law enforcement officers should show their identity documents are inconsistent, but the People's Police Law is a special law. According to the legal principle that the special law is superior to the general law, the police should apply the provisions of the People's Police Law.

legal ground

"Administrative Punishment Law of the People's Republic of China" Article 34 If a law enforcement officer makes a decision on administrative punishment on the spot, he shall show his law enforcement identity certificate to the party concerned and fill in a written decision on administrative punishment in a predetermined format and number. The written decision on administrative punishment shall be delivered to the parties on the spot. The written decision on administrative punishment prescribed in the preceding paragraph shall specify the illegal act of the party concerned, the basis of administrative punishment, the amount, time and place of the fine and the name of the administrative organ, and shall be signed or sealed by the law enforcement personnel. The decision on administrative punishment made by law enforcement officers on the spot must be reported to the lower administrative organ for the record.