Gun head box capable of being repeatedly used in microbiological detection of medical apparatus and instruments through moist heat sterilization

The utility model relates to a reusable gun head box capable of moist heat sterilization in microbiological detection of medical instruments, which comprises a box body, and a movable cover plate is arranged at the top of the box body; two layers of partition plates are arranged in the box body up and down, a plurality of square holes are formed in the partition plate arranged on the upper layer, a plurality of round holes are formed in the partition plate arranged on the lower layer, and the square holes and the round holes correspond to each other in position and are located on the same center line; a plurality of air holes are formed in the front side wall and the rear side wall of the box body, and movable doors capable of sealing the air holes are arranged at the air holes. The gun head box is simple in structure, the service life of the gun head box is prolonged due to the whole metal material, and the gun head box is more sealed; the cover body adopts a pull-out structure, so that the gun head cannot b