Objective: To make biomechanical study on our newly develeped composite fixture- external fixatorand 3 compress perews for fem ornal neck fracture. Methods f Seven cadaveric hip joints were used inbiomechanical investigation. First. some data of normal hip joints were recorded, then, thespecimens were divided into two groups and control osteomy was performed to the model of thefYacture of femoral neck. The tested group was fixed by the composite fixture and control group wasfixed by only three compress screws, Results: the distribution of stress, strain, displacement,rotation and ultimate strength were recorded, the results of the composite fixture were found to bestronger thnn that of the control group. Conclusionf the stab1ility effect of the composite Iixture isbetter than that of the screws.