The invention provides a method for producing viral vaccines, which comprises the following steps of: 1) inoculating cells for producing virus into a bioreactor with a Disks carrier, and culturing; and 2) harvesting the virus to prepare the vaccines. In addition, besides the step 1) of culturing the cells for producing the virus, the method further comprises the following steps of: when the cellsfor producing the virus grow to a certain density, inoculating and proliferating the virus to be produced. By the method, the cell yield can be improved, the production cost can be reduced, and the production efficiency can be improved.