The screw holes of anatomic plate are oval, and longitudinal axis of the screw hole is parallel to the axis of the plate. The plate surrounding the screw hole is smooth, parallel to the longitudinal axis of the long bone. Under outside force or inside force, the top of screw can move on the smooth surface surrounding the screw hole; the movement is a reversible one. Domestic plate can fix bone fracture stably, and the outside force and inside force can result in micromovement of the fracture ends, stimulating the fracture ends and bone callus formation. Repetitive force is beneficial to bone callus response, protect fragile new vessels and bone trabecula from damage, and promote fracture healing.