With the increase of the importation scale, the quality and safety of imported whey powder has become the hot issue which arise a lot of attentions and should be solved urgently. This thesis analyzes the necessities of establishing the quality and safety risk warning mechanism of imported whey powder, based on the current conditions of whey powder importation, using the method of warning method based on case study ratiocination, sets up the imported whey powder quality and safety risk warning mechanism from three aspects, including warning information gathering, warning model building and fast response system, and puts forwards the countermeasures of consummating the warning system