(a) if the circumstances are obviously minor and the harm is not great, it is not considered a crime;
(two) the crime has passed the limitation period;
(3) Being exempted from punishment by an amnesty order;
(4) Failing to tell or withdrawing a crime that should be dealt with only after being told according to the Criminal Law;
(5) The criminal suspect or defendant dies;
(six) other laws and regulations shall be exempted from criminal responsibility.
Supplement: Article 177th of the Criminal Procedure Law of People's Republic of China (PRC).
If the criminal suspect has no criminal facts, or is under any of the circumstances specified in Article 16 of this Law, the people's procuratorate shall make a decision not to prosecute. If the circumstances of the crime are minor and it is not necessary to sentence or exempt from punishment according to the provisions of the Criminal Law, the people's procuratorate may make a decision not to prosecute.