The safety and efficacy of the currently approved vaccines in China are high, and there is no evidence yet to show which manufacturer produces the best. There is no need to deliberately select the new crown vaccine, as long as the vaccine has been officially approved by the state on the market, in principle, you can rest assured that the vaccine. Currently on the market are the Beijing Biological New Crown inactivated vaccine, which has passed the WHO emergency use certification and become the sixth vaccine included in the WHO emergency use list, with good safety. Beijing Kexing Zhongwei new crown vaccine is belongs to the inactivated vaccine, is the culture amplified live virus through the physical and chemical methods of culture and expansion of the live virus, inactivation after a series of purification technology preparation. Wuhan Bio-Xin Guan vaccine, with good safety, produces high titers of antibodies in all vaccinees after two shots of the immunization program. In summary, as long as the vaccine is produced by nationally recognized manufacturers, it has a reliable safety and immunity effect, and can be safely administered under normal circumstances.