Safe self-destroying injector

The invention provides a safe self-destroying injector, which comprises an outer shell, a core bar, a core bar rubber stopper, a core bar cover, a core bar lock catch, an injection needle, a needle bed, a spring, a safety spring storage room and the outer cover of the safety spring storage room, wherein the core bar rubber stopper is arranged at the lower end of the core bar; the core bar cover is assembled on the core bar; the core bar lock catch is fixed on the upper inner wall of the outer shell; the core bar is arranged in the outer shell; the core bar is provided with a safety self-destroying switch pillar; the safety spring storage room is fixedly connected with the outer shell and is provided with an elastic distracting device; the tail end of the needle bed is arranged in the safety spring storage room, and the head of the needle bed is arranged in the outer cover of the safety spring storage room; the safety spring storage room is fixedly connected with the outer cover of the safety spring storage room; the spring is sleeved on the surface of the needle bed; and one end of the spring is connected with the tail end of the spring, and the other end of the spring is connected with the inner wall of the outer cover of the safety spring storage room. The safe self-destroying injector can realize the safe self-destruction, thus not only being safe in use but also being safe in postprocessing.