This research aims to investigate the effects of beta-alanine (BA) supplementation on simulated 2-day freestyle wrestling performance, as well as on exercise-induced muscle fatigue and oxidative stress in wrestlers. In addition to the common issue of long-term insufficient energy intake due to weight control, high-intensity training can further exacerbate exercise-induced oxidative stress and muscle fatigue, thereby impairing athletic performance. Therefore, finding effective ergogenic aids to reduce these negative physiological responses is crucial for optimizing athletes' competitive condition. Based on a literature review, this study will implement the Specific Wrestling Performance Test (SWPT) to simulate two consecutive days of freestyle wrestling competitions according to Kraemer's model. Multiple performance assessments will be used to evaluate the impact of BA supplementation on athletes' physiological indicators and performance. It is expected that BA supplementation will enhance systemic antioxidant capacity, reduce muscle fatigue and oxidative stress induced by simulated wrestling matches, and improve wrestling-specific physical performance.