Constitutional review constitutes a practical activity in constitutional interpretation. The openness of the constitution itself and societal changes, however, make it challenging to determine a definitive basis for this review. Currently, the primary focus is on establishing the foundation for review, yet the right to review is neglected. Furthermore, the nature of the review remains largely unexplored within conceptual legal theory. This article delves into the examination of constitutional complaints in Taiwan. We aim to contribute to the advancement of the science of constitutional interpretation by analyzing the interplay of fundamental rights and recent developments in Germany.