The utility model relates to an automatic cutter for an injection bottle, which has the advantages of small volume, light weight, long service life, simple structure, and easy use. The utility model is composed of a disinfecting system, an electromechanical system, and rack sections. The disinfecting system comprises an atomizing disinfection device, and a device for ultraviolet disinfection; the mechanical system is an electromagnet mechanism. The utility model can automatically complete two programs of cut and disinfection for the injection bottle, and the utility model simultaneously has the functions of concentration and recovery processing for glass broken slag. The utility model can reach the purposes of being strict with the operation specification of physic liquor formulation, improving the working environment of medical care personnel, enhancing safety guard, and improving work efficiency.