The main cause of synovitis is that the patient’s joints are often subjected to weight-bearing activities or prolonged exposure to cold, which can lead to inflammatory exudation and inflammatory changes in the synovial area of the joints. In addition, the patient suffers from traumatic arthritis, rheumatoid arthritis, osteoarthritis and other diseases in the joint area, which can also combine to cause aseptic disease in the synovial joint area. Patients will feel obvious tingling sensation in the joints, swelling in the joints, positive localized tenderness on palpation, affecting the normal flexion and extension activities of the joints. In the treatment, the main conservative treatment is to reduce the weight of the joints, pay attention to warmth, can be applied to pry and loosen or inject joint lubricant into the joints, which can reduce and alleviate the patient’s clinical symptoms.