High-holding-force bone screw and using method thereof

The invention provides a high-holding-force bone screw and a using method thereof, and belongs to the technical field of bone screws. Comprising a screw assembly, a transmission assembly connected into the screw assembly in a threaded and sleeved mode, a supporting assembly arranged on the transmission assembly and a stabilizing assembly arranged in the screw assembly in a sleeved mode. The transmission assembly is driven to move upwards by rotating the elastic piece upwards, the fixing plate is matched with threads on the inner wall of the screw body, after the transmission assembly moves upwards, the first supporting rod is pulled upwards to be separated from the interior of the elastic piece, the first supporting rod is rotated to be in a horizontal state, the second supporting rod rotates around the center shaft, and one end of the second supporting rod is clamped in the rectangular groove. The transmission assembly, the supporting assembly and the screw assembly form a whole, the bottom of the screw body