The three-dimensional gait analysis and training system employs advanced wireless wearable position sensors, featuring high precision, fully automatic data collection and analysis capabilities. It can fulfill functions such as comprehensive joint assessment of patients, gait analysis, clinical reports, gait data recording, and real-time gait animation analysis. Through gait analysis and examination, it also helps in diagnosing lower limb neuromuscular and joint disorders, and observing the effectiveness of rehabilitation medical measures.