Abstract: The hydriding/de-hydriding process of metals and alloys is a basic physicochemical reaction which should meet the law of thermodynamics and kinetics. In order to improve the performance of hydrogen storage materials and develop some new kinds of hydrogen storage materials, it is necessary to study thermodynamics and kinetics for this reaction experimentally and theoretically. The thermodynamic knowledge can be used to predict the reaction temperature of hydriding/dehydriding process and estimate the capability of hydrogen storage. Nevertheless, thermodynamics can not tell us the reaction rate that will prevent us from the practical application of hydrogen storage materials. In this paper, a thermodynamic phase diagram analysis was introduced and a new model system for kinetics of hydriding/dehydriding was summarized, based on which, one might find a useful tool for evaluating and designing new hydrogen storage materials.