Objective To investigate the test-retest reliability of Muscle Evaluation and Treatment System on healthy adults. Methods 30 healthy adults participated in this study and were tested by Muscle Evaluation and Treatment System, designed by University of Shang-hai for Science and Thechnology and Rehabilitation Department of Huashan Hospital, on muscle strength of both sides' flexor carpi mus-cles, musculus flexor digitorum sublimis, flexor digitorum profundus, extensor digitorum muscle, extensor carpi muscles. Peak torque, peak torque per weight, largest single work, largest single work per weight, average torque, average power were the main parameters. Each partici-pant was tested 2 times, and the interval was 7 days. Results Almost perfect test-retest reliability of peak torque was performed on flexor car-pi muscles, musculus flexor digitorum sublimis, flexor digitorum profundus, and extensor carpi muscles. Moderate to excellent test-retest re-liability of average power were performed on extensor digitorum muscle. Conclusion Good test-retest reliability of Muscle Evaluation and Treatment System is proved in the study.