Anti-pollution injector

The utility model provides an anti-pollution injector and belongs to the technical field of medical instruments. According to the technical scheme, the anti-pollution injector comprises a needle head, a needle tube, a plug, and a needle core and is characterized in that an elastic sterile cover is arranged at the front section of the needle tube, a C-shaped disinfection groove is formed in the elastic sterile cover, a sliding arm is arranged in the C-shaped disinfection groove, and a disinfection clip is arranged at the front end of the sliding arm. The anti-pollution injector is simple in structure, infection of the injection portion can be completely prevented when the anti-pollution injector is used to give an injection to a patient, and work difficulty of medical workers is reduced.