The invention provides a method for preparing a
rotavirus vaccine
stock solution by using serum-free Vero cells. The method comprises the following steps: culturing Vero cells by using a serum-free culture medium, thus obtaining serum-free culture medium adapted
cell strains; establishing a serum-free
Vero cell seed
bank by utilizing the obtained serum-free culture medium adapted
cell strains; establishing a serum-free
rotavirus strain working seed
bank by utilizing the obtained serum-free culture medium adapted
cell strains; carrying out reviving, culturing, passage and amplification
on cells in a
Vero cell working seed
bank by utilizing the serum-free culture medium, using the cells in the
Vero cell working seed bank as basic cells cultured in a
bioreactor, and carrying out
continuous perfusion culture on high-density Vero cells by applying the
bioreactor and a
microcarrier and using the serum-free culture medium after cell amplification; after inoculating
virus seeds in the
rotavirus strain working seed bank, carrying out
bioreactor-
microcarrier serum-free culture, obtaining a
virus solution when
virus is amplified to the
summit, obtaining liquid virus
titer, and carrying out clarification and ultra-
filtration concentration, thus obtaining a serum-free rotavirus
stock solution for human.