Tish article researches on the bilmddimical experiments with modified fissile spiral style artificialflip joint.With the applied force of hip joint, It is illustrated with joint, stress on the inside andoutside or femur and strein distribution curve. Moreover experiments are conducted on the firmnessof the artificial hip joint. biomedinical experiments and clinieal apllieation indicate that modifiedfissile spiral style artificial hip joint can form secure biological fixation and make reasonal stressconduction