Lateral position fixator

The utility model relates to the technical field of neck fixing devices, in particular to a side-lying position fixing device. The device comprises an upper plate, a lower plate and a shielding mechanism, the shielding mechanism comprises an upper connecting plate and a lower connecting plate, and the upper connecting plate and the lower connecting plate are fixedly connected to the bottom end surface of the upper plate and the top end surface of the lower plate respectively; the upper sliding groove is formed in the bottom end of the upper connecting plate, and the lower connecting plate is movably connected to the inner side of the upper sliding groove; the sliding block is fixedly connected to the outer side of the lower connecting plate, and the sliding block is movably connected to the inner side of the upper sliding groove; the shielding mechanism is arranged, elements arranged between the upper plate and the lower plate can be effectively shielded, mistaken touch of a user is avoided, meanwhile, the up