After two years of research and development, the rehabilitation machine specially designed for patients with lower limb surgery helps patients recover their ability safely and scientifically with the precision mechanical structure as the core. It uses a modular joint design and adjustable support system, which can flexibly adapt to different body types, from hip to ankle to provide stability assistance. Built-in intelligent sensor real-time monitoring of sports posture, suitable for hospital rehabilitation, community rehabilitation and family environment. Through the dual-mode training of "active and passive", it gradually transits from simple flexion and extension to simulated walking, and pays attention to comfort and safety in the sexual design and core function design: from complete passive assistance to active resistance exercise, it helps patients rebuild their gait step by step.