Developing procedure for quantitative evaluation of product safety is necessary to manufacture safe and secure products. In this paper, a human head was focused on as a main theme because head injury is thought to be one of the most dangerous injuries. Finite element method analysis should be useful method to evaluate product safety. So some human head finite element models were constructed, but these mainly focused on only dynamic impact condition. We think in developing safety products, quasi-static impact conditions are also important Therefore the finite element human head models which can both simulate dynamic and quasi-static impact conditions are constructed And also head fracture criteria are discussed using constructed head model and a single bone simulation