Locking nail thread guiding structure

The invention discloses a locking nail thread guiding structure which comprises a nail body, a round head is formed at the top end of the nail body, a cap head is formed at the tail end of the nail body, a plurality of self-tapping grooves are formed in the outer side of the round head in the circumferential direction, and threads are formed in the periphery of the nail body in the extending direction of the nail body. The diameter of the threads close to the cap head is gradually increased, the diameter of the other threads is not changed, the distance between the other threads is not changed, a driving groove is formed in the end face of the cap head in a concave mode, the end face of the cap head is flush, and after the cap head is screwed into a locking plate, the end face of the cap head is flush with or lower than the surface of the locking plate. A round head design is adopted, so that tissue irritation is reduced; a through diameter is adopted, so that the guidance quality is improved; the tail diamet