The structure is set in the bone plate with a number of slotted holes, set in the slotted holes at one end of the spherical pressurized screw holes, the other end of the locking threaded holes, in the bone plate at one end or two ends can be set with a number of locking threaded holes, especially suitable for cancellous bone fixation. The bone grafting steel plate is curved, and several decompression slots are set on one side of the bone grafting steel plate. The locking thread holes are provided as conical multi-head thread holes or cylindrical multi-head thread holes, and the number of heads of the multi-head threads in the conical multi-head thread holes or cylindrical multi-head thread holes is 2 heads. A plurality of screw holes may be provided in the osteoblast steel plate, and elastic grooves are provided between the screw holes. A number of screw holes may be provided in the steel plate of the bone, and the screw holes are provided with elastic slots.