[Purpose] This study aims to explore the application gamification theory in the field of user experience design. [Methods] Using a literature review methodology, the theoretical foundations and practical applications of gamification in user experience design were comprehensively examined, and existing achievements were systematically summarized. [Results] Three primary applications of gamification theory in user experience were identified: user analysis, product testing, and multi-scenario immersive experiences. Its implementation faces technical challenges in complex motivation analysis and normalization processes, application dilemmas in evaluating gamified experiences against user intent, and ethical challenges stemming from potential negative impacts. [Conclusion] Future development of gamified user experiences will feature the normalization of gamified experiences, collaborative and shared user experiences, and optional gamification. This will drive continuous innovation in user experience design along gamification pathways, providing new directional guidance for the field's advancement.