Germfree sleeve used for medical disposable spray gun

The utility model relates to a medical instrument, in particular to a germfree sleeve used for a medical disposal spray gun. According to the technical scheme provided in the utility model, the germfree sleeve used for the medical disposal spray gun comprises an end cover which is fixedly connected with one end part of a sleeve body; the end cover is provided with a medicine outlet; the end cover is conical; the conical top of the end cover is provided with the medicine outlet; and the medicine outlet and the sleeve body are coaxially arranged. As for the germfree sleeve, the cross infection among patients can be avoided so as to be more beneficial for the health of the patient, the disinfection time is saved, and the germfree sleeve has the advantage of having low machining cost simultaneously.