Objective. The current study was conducted to evaluate which was more effective aerobic or resistance exercises in reducing plasma liver enzymes level following burn injuries. Materials and Methods. Sixty burned patients with burned body surface area about 30% to 50% participated in this study. Their ages ranged from 20-45 years. They were selected from Orabi Hospital and were divided randomly into two equal groups. Group (A) composed of 30 patients who received aerobic exercise in form of treadmill exercise for 45 minutes at 60-75% of maximum heart rate, 3times/week for 8 weeks beginning after their release from intensive care unit in addition to their traditional physical therapy program (splinting, stretching ex. and ROM ex.) and medical treatment. Group (B) composed of 30 patients who performed seven resistance exercises using dumbbells, sand bags and body weight for 2 and 3 series of 10 repetitions at intensity of 50%-70% of 1 repetition maximum for 45 minutes/session, 3times/week for 8 weeks beginning after their release from intensive care unit in addition to their traditional physical therapy program (splinting, stretching ex. and ROM ex.) and medical treatment. Method of evaluation was measurements of alanine transaminase (ALT) and aspartate transaminase (AST) liver enzymes by spectrophotometer device. Results. There was a_significant decrease in ALT and AST plasma liver enzymes levels in aerobic exercise group compared to that in resistance exercise group. Conclusion. Aerobic exercise was more effective than resistance exercise in reducing plasma liver enzymes level (AST and ALT) following burn injuries.