UnderwaterTreadmillTraining consists of a movable flat, training bath and water circulation filtration and disinfection system, the height of the water surface in the bath can be freely adjusted to achieve different weight loss. There are handrails and emergency buttons on both sides of the bath to ensure training safety. Computer control system to control the walking speed and direction. With walking, running, forward and reverse, front jet function. Through the side and rear glass windows can observe and guide, photograph and record the patient. When training, the patient enters the bath, adjusts the water depth, both upper limbs swing freely with walking or hold on both sides of the handrail, and walks in the direction and speed set on the activity plate. Using the characteristics of water such as water temperature, buoyancy, pressure and resistance and the activity plate, the patient’s muscle strength, joint mobility, sensory and coordination functions are trained to reduce pain, improve gait and promote functional recovery. It is suitable for the treatment of low paraplegia, hemiplegia, post-polio, sciatica, lumbosacral neuritis, osteoarthritis, lower limb fracture, joint ankylosis and contracture, lumbar intervertebral disc herniation, and low cardiopulmonary function. Patients are required to have good standing position function and upper limb grip function. Usually the treatment water temperature is 33-35℃, time: 20-30 minutes, 20 times/treatment.