Biological three-edge press-fit nail

The invention relates to the technical field of medical biological internal fixation instruments, and discloses a biological three-edge press-fit nail. The biological three-edge press-fit nail comprises a press-fit nail body (10) made of a cortical bone. The front end face (1) of the press-fit nail body (10) is a conical surface, and the rear end face (2) of the press-fit nail body (10) is a flat surface. A threading hole (4) extending in the length direction of the press-fit nail body (10) is formed in the press-fit nail body (10). The biological three-edge press-fit nail does not affect postoperation nuclear magnetic resonance examination after being used, is simple in machining process and quite low in cost, and reduces the financial burden of a patient.