Abstract: As the neck stiffness influences occupant’s biological injury mechanics, a dummy neck joint stiffness curve is applied to the simulation test of neck joint tolerance limit. The neck injury response and injury limit are obtained in LS-DYNA and the effects of joint stiffness and joint damping on neck dynamic response are studied. The tensile and bending response characteristics of Chinese physical sign neck model are evaluated by neck calibration simulation test. A comparison curve of low-speed rear impact simulation shows the neck torque of the HybridIII dummy is 40.2 N·m whereas that of the Chinese dummy is 35.6 N·m. The neck of the Chinese dummy is not easy to reach the damage limit value in the CNCAP whip test.