Split type surgical instrument for minimally invasive treatment of carpal tunnel syndrome

The invention relates to the technical field of medical auxiliary instruments, in particular to a split type surgical instrument for minimally invasive treatment of carpal tunnel syndrome, which comprises a bottom plate, a top plate and a cutting knife for cutting off a transverse carpal ligament, the head end of the bottom plate is provided with a through hole, the head end of the top plate is provided with a connecting bulge, the connecting bulge is matched with the through hole, and the cutting knife is arranged on the bottom plate. The bottom plate is detachably connected with the top plate, and the top end face of the bottom plate and the bottom end face of the top plate are each provided with a cutter groove used for guiding the cutter to conduct cutting. Through clamping matching of the top plate and the bottom plate, upper and lower side tissues of the transverse carpal ligament are protected while the transverse carpal ligament is cut off, and median nerves and other tissues are prevented from being