According to the Provisions on Safety Training of Production and Business Units (Order No.3 of the State Administration of Work Safety), the main person in charge and safety production management personnel must receive special safety training, pass the examination of their safety production knowledge and management ability by the safety production supervision department, and obtain safety qualification certificates; Safety qualification training time shall not be less than 48 hours; The annual retraining time shall not be less than 16 hours. Newly hired temporary workers, contract workers, laborers, rotation workers, contract workers, etc. : The mandatory safety training time is not less than 72 hours, and the annual retraining time is not less than 20 hours.