随着游戏设计领域的不断发展，玩家体验已经成为了游戏设计过程越来越受到重视。良好的用户界面（User Interface，简称UI）和用户体验（User Experience，简称UX或UE）不仅可以提升玩家的游戏体验使其更加舒适自然，也可以增强游戏叙事的流畅性和深度。本文以游戏Persona 5 Royal作为研究对象，运用MDA模型从机制、动态、美学等方面分析UI/UX设计对这些要素的影响，并分析其设计在游戏叙事中的关联性，旨在通过对P5R这一成功作品的UI/UX设计的深入分析，为游戏设计领域的从业者提供参考，加深对游戏设计中UI/UX的重要性的认识，提供基于用户体验与MDA模型的UI/UX设计思路。

With the continuous development of game design field, player experience has become an increasingly important part of the game design process. A good User Interface (UI) and User Experience (UX or UE) can not only enhance the player's gaming experience to make it more comfortable and natural, but also enhance the fluidity and depth of the game narrative. The game Persona 5 Royal has won several annual awards and honorable mentions and enjoys a high reputation for excellence in related game design. This paper mainly analyzes the UI/UX design of P5R in depth through three aspects of the MDA framework: mechanism, dynamics and aesthetics， and then analyzes the relevance of their design in the game narrative. It aims to provide reference for practitioners in the game design field, deepen their understanding of the importance of UI/UX in game design, and provide UI/UX design ideas based on user experience and the MDA model through an in-depth analysis of the UI/UX design of P5R, a successful work.