Background: Recently, more and more high energy injuries appeared, the proximal fracture of femur was no longer the simple fracture of btween femur tuberosity or below femur tuberosity.It is often accompanied with fracture of the upper femur.For biodynamic and anatomical reasons, such fractures are difficult to deal with,there is often great pressing stress in the inner corner of the neck of the femur, which caused great extending stress in the outer surface.Such fractures are unsteady for any of such stresses would cause the inner immobilization to fail,while to apply the dynamic condylar screw(DCS) on such fractures may got satisfactory results and it provided favorable conditions for the early post operational non loading walking exercises. Objective: To discuss the treating value of DCS in the proximal fracture of the femur. rn