According to the biological material properties used in predecessors' literature, a FE thorax model is developed based on human anatomical structures. With the model a series of simulations on predecessors' experiments are conducted, including simulations on three-point bending test for ribs performed by Kallieris, the rib structural experiments conducted by Zuoping Li, and Patrick's series experiments of low-speed impact. The results indicate that the thorax FE model can be effectively used for biomechanical researches on human thorax injuries in vehicle collisions.