The utility model discloses a culture dish adding device. The utility model relates to the technical field of bioexperiment tools. The culture dish adding device comprises a base, a balance base and aliquid nitrogen storage cabinet, a vessel groove is formed in one side of the upper surface of the base, a clamping arm is fixedly connected to one side of the vessel groove, a fixing frame is fixedly connected to the lower portion of the vessel groove, and a heating plate is arranged in the fixing frame. Culture dish adding device, arrangement through a vessel slot, the effect of fixing the culture dish is achieved; the situations of overturning, falling and the like are effectively avoided; the clamping arms are arranged; through the arrangement of the heating plate, the mutual pollution between the culture dish and experimenters can be effectively avoided, the body of the experimenters is guaranteed while the experiment safety is improved, the effect of clamping the culture dish is achieved, the sterilization and disinfection effects are achieved through the arrangement of the heating plate, and a clean and sterile environment is provided for experiments.