Objectives To evaluate the hip stress status in vivo in order to serve for clinic. Methods Based on gait database of the human hip in vivo collected by Biomechanics Lab of Berlin University and Hertzian elasticity contact theory, a realistic stress level analysis for dynamic cases at hip joint(including: walking slowly, walking normal, walking fast, knee bend, going up stairs, going down stairs, standing up and sitting down activities) is presented. Results The maximum peak stress for the human eight routine activities is 11.25 MPa, 11.38 MPa, 11.89 MPa, 10.32 MPa, 11.66 MPa, 11.63 MPa, 10.37 MPa, 10.29 Mpa respectively; The minimum peak stress for the human eight routine activities is 5.32 MPa, 5.77 MPa, 6.54 MPa, 7.40 MPa, 5.96 MPa, 6.41 MPa, 6.00 MPa, 5.56 MPa respectively. The average peak stress is 8.75 MPa, 8.95 MPa, 9.63 MPa, 8.70 MPa, 8.83 MPa, 9.23 MPa, 8.01 MPa, 7.77 MPa. Conclusions (1) The peak stresses in human routine activities range from 5.32 MPa to 11.89 MPa; (2) The general average peak stress in the human routine activities is 8.72 MPa; (3) The peak stress distributions have a double peak curve for walking cases, and there exist the peak stress for the walking fast case.