1. If a person is stabbed with a knife and causes minor injuries to the victim or more, the person who has reached the age of 16 shall be subject to criminal detention. 2. If they fail to meet the criteria for criminal filing and belong to public security cases, they will not be detained if they have reached the age of 16 but not the age of 18 and have violated public security management for the first time. Relevant laws and regulations: 1. Article 17 [Age of criminal responsibility] of the Criminal Law, a person who has reached the age of 16 shall bear criminal responsibility if he commits a crime. If a person who has reached the age of 14 but not the age of 16 commits intentional homicide, intentional injury causing serious injury or death, rape, robbery, drug trafficking, arson, explosion or poisoning, he shall bear criminal responsibility. If a person who has reached the age of 14 but not the age of 18 commits a crime, he shall be given a lighter or mitigated punishment. If he is not given criminal punishment because he has not reached the age of 16, his parents or guardians shall be ordered to discipline him; When necessary, they may also be taken in by the government for reeducation. If a person who has reached the age of 75 commits a crime intentionally, he may be given a lighter or mitigated punishment; Whoever negligently commits a crime shall be given a lighter or mitigated punishment. 2、 Article 21 of the Law of the People's Republic of China on Administrative Penalties for Public Security, if a person who violates the administration of public security has one of the following circumstances and should be punished by administrative detention according to this Law, he shall not be punished by administrative detention: (1) he has reached the age of 14 but not the age of 16; （2） Those who have reached the age of 16 but not the age of 18 and have violated the administration of public security for the first time; （3） Over 70 years old; （4） Pregnant or breast-feeding an infant under the age of 1.