Pedicle screw assembly

The invention relates to a pedicle screw assembly and relates to the field of medical instruments.The pedicle screw assembly comprises a screw body and a screw head at the top of the screw body, a center hole is formed in the screw body in the vertical direction, the bottom of the center hole is closed, a screw side hole with at least one through side is formed in the screw body in the horizontal direction, and the screw side hole communicates with the center hole; the nail further comprises a nail screwing tool, a fixing hole used in cooperation with the nail screwing tool is formed in the nail head, and the top of the center hole is open and communicated with the fixing hole. The nail screwing tool can be inserted into the fixing hole and the center hole to temporarily close the nail side hole or pulled out of the fixing hole and the center hole to enable the nail side hole to be communicated. According to the pedicle screw, the screw side hole of the pedicle screw can be temporarily closed through a matche