Cervical lateral mass screw fixation is a procedure to stabilize the vertebral body by fixing the lateral mass of the cervical spine with screws, mainly for vertebral instability. The lateral mass of the cervical spine is a bony structure formed by the fusion of the posterior lateral aspect of the vertebral body with the pedicles and the vertebral arches, which includes the superior and inferior cervical synchondromes, and is located on the right and left sides. The bony column structure of the lateral mass of the cervical spine is involved in the stability of the cervical spine. When vertebral instability is caused by factors such as cervical degeneration or trauma, the cervical side blocks can be fixed with screws to stabilize the vertebral body, which is known as cervical side block screw fixation. This procedure mainly takes advantage of the fact that the cervical side blocks are wider than the vertebral arch and the implantation area is safer. Although cervical lateral block screw fixation is not as stable as pedicle screw internal fixation, its surgical effect is worth affirming in terms of the safety of surgical operation and short-segment stability.