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Background: The vehicle injury priority rating data indicated that neck injuries became the fifth most important injury category (after head, face, chest and abdomen), During rollovers the centrifugal force tends to maintain a belted occupant erect with his/her head upward and outboard, and an impact to the occupants head would come from the upper and lateral sides of the vehicle.Up to now, knowledge on the mechanism causing this kind neck injury is still rather limited.Objective: The purpose of this paper is to summarize a numerical analysis of compressive neck injuries due to vertical loading applied through the head.Method and Material: Our own validated, custom-made head-neck complex FE model was used to simulate those cadaver compression tests, which was integrated 50th percentile human head-neck model with various ligaments, joint capsule and muscles connecting the head and the neck.Results: Comparing all the cases, in general C2-C3 facets were compressed most in both local x-axis (along the facet joint surface) and z-axis (normal to the facet joint surface) more than other facets, and severe disc compression can be seen in C5-C6 and C7-T1 discs.Conclusion: The role of compression force with more sliding in cervical facet surface may be an important causal mechanism leading to facet failure in compressive neck injuries.