China novel coronavirus pneumonia emergency conference was held in August 6th. Michael Ryan, who is responsible for the health emergency project, said that there are about 165 vaccines in the world at present, 26 of them are in clinical trials, six are in the three phase of clinical trial, three of them are from China, and it is incredible to achieve such results in the short term. The next step is to ensure that the vaccine is safe and effective. Large scale tests will be carried out in phase III clinical trials. Who hopes that more vaccine candidates will enter the phase III clinical trial phase.