The work aims to apply augmented reality (AR) technology to develop a popular science game "mortise and tenon", improve users' understanding and interest in traditional mortise and tenon structures through interaction design combining virtual and reality, and spread traditional Chinese woodworking skills. The game was based on UX design principles. Vuforia and Unity were used to build AR interactions. Through plane detection technology and picture tracking technology, the real environment was identified, the 3D model of the mortise and tenon structure was projected onto the user's device to provide an immersive splicing experience. Guidance and feedback functions were designed and tested by analytic Hierarchy Process (AHP) and fuzzy comprehensive evaluation (FCE) to optimize interaction fluency. The data showed that the user evaluation was good, the score was 85.12, especially in the two aspects of science popularization effect and interactive guidance. Through the game, users had a deeper understanding of the splicing principle of mortise and tenon structures, and their interest in traditional culture was increased. The AR-based "mortise and tenon" game has successfully realized the spread of traditional culture and provided users with an interesting way to learn. The research shows that the application potential of AR in cultural science popularization is huge, and the interactive experience of more traditional skills can be expanded in the future.