In order to analyze the human properties for impacts, the authors are developing a finite element (FE) model of the whole human body. As the part of this model, the FE model of the human thorax was developed and validated by comparison with published cadaver test data. Some injury data of side impacts were calculated using this thorax model. The results are as follows: 1) The response of this thorax model agreed well with that of cadavers, and 2) Injury data for side impacts can be adequately calculated using this thorax model.