Due to the diversities of facts in our lives, the nature and openness of the fundamental rights, the questions of concurrence of fundamental rights often arise. The theory of concurrence of fundamental rights intends not only to guarantee individual's fundamental rights but also to oblige the state to justify its interferences in such rights. It plays an important role in the doctrines of fundamental rights. However, the scholars do not pay enough attentions to it until the theoretical focus began to change recently. After inquiring into the German theories and practices, one might find that the principle of German approach to resolve such problems is open to consideration case by case, moreover, in the three-steps review framework of liberal rights, the resolution of such problem has been pushed forward, it means that the approach to reduce the number of fundamental rights involved has been replaced with the approach of weighting. In China, a theory of concurrence of fundamental rights might be improved by the development of constitutional doctrines.