Knee joint treatment instrument is a kind of medical equipment that is conducive to knee joint recovery and massage effect. With the improvement of medical level, medical equipment is constantly improving. Knee joint treatment instrument has five different gears that can be adjusted. In the process of use, fix the knee joint treatment instrument at the knee, input relevant data through the input key, control the hydraulic press through the controller, the hydraulic press drives the massage rod, the massage rod drives the massage twist, and the massage twist massages the knee joint. The spring quickly recovers the massage twist to achieve the effect of massage. By tapping the knee joint, the pain of the knee joint can be greatly relieved and the knee joint can be better protected. With the improvement of living standards, our current per capita age is also on the rise. With the increase of age, we will find that the body is no longer as tough as before, and call on more people to care for the elderly. Knee joint is the most complex joint of human body, which plays a vital role in people's health. However, many people have symptoms caused by knee joints, especially among the elderly. Many elderly people suffer from knee arthritis, rheumatism and other diseases. The knee joint therapeutic instrument is designed and developed in combination with relevant medical technologies, which ultimately alleviates the pain of the elderly and helps the elderly recover their health. In terms of product design, the knee joint treatment instrument is designed according to customer needs, and through multiple investigations and analysis of the elderly or people with knee joint inflammation, effective use of the latest medical technology, from the perspective of comfort and safety Tailored for patients. The shape of the knee joint treatment instrument is an innovative design based on the human body and knee, which fully takes into account the body characteristics of the human body, has good airtightness and is comfortable to wear; the internal structure design promotes tissue regeneration, accelerates the dissipation of inflammation, and helps patients quickly recover. Knee joint treatment instrument has many effects on knee osteoarthritis, synovitis and patella softening symptoms, which can effectively reduce local pain.