The present invention provides a transverse shift screw tail, a transverse adjustable spinal screw, and an implantation method. The screw comprises a screw tail and a screw seat installed on an installation head of the screw tail, a top of the screw seat is provided with a rod groove used for placing a connecting rod, the rod groove is recessed downwards from the top of the screw seat and radially penetrates the screw seat, a bottom of the rod groove is a curved surface adapted to anouter circumferential surface of the connecting rod, and aside surface of the rod groove is provided with a locking thread fit with a locking bolt； and the screw tail comprises a fixing column capable of being screwed into a vertebral body and a platform located at an end portion of the fixing column, the platform is provided with the installation head used for connecting with the screw seat, and an eccentric distance is provided between a center of the installation head and an axis of the fixing column. According to the transverse shift screw tail, the transverse adjustable spinal screw and the implantation method, by designing a brand new screw, the screw seats are connected linearly, the installation process of the connecting rod is enabled to be reliable and effective, a spine is prevented from being improperly distorted, the difficulty of operation by a doctor is reduced and the operation effect is improved.
