Recently, Prof. Shi Xuezhong of School of Public Health of ZZU participated in the development of the world’s first new crown inactivated vaccine phase I / II clinical trial blind review and phased blind uncover meeting was held in Beijing and Henan at the same time. Experts from the vaccine special class of the Joint Prevention and Control Mechanism of the State Council and the Biotechnology Development Center of the Ministry of Science and Technology attended. The results showed that high titer antibodies were produced in the vaccine group after different procedures and doses, and the positive seroconversion rate of neutralizing antibodies reached 100％ after 28 days of routine vaccination.