Abstract: Bolted joint is the weak link of composite structures, and determines the load-carrying capacity of the entire structures. The reinforcement design of composite bolted joints can significantly improve the application efficiency of composites. For this reason, researchers at home and abroad have developed design methods for the overall or local improvement of composite bolted joints, and evaluated the strengthening effects of these methods by using experimental and numerical simulation methods. Some of the reinforcement design methods have been applied in the design of advanced aerospace vehicles abroad. In this paper, the existing reinforcement design methods of composite bolted joints are classified and summarized in detail, and the evaluation methods for the strengthening effect are analyzed. Finally, the existing problems are summarized, and the future development direction is proposed.