The symptoms of pain in the knee when squatting: 1. may be due to meniscal injury of the knee joint. 2. may be due to ligamentous lesions of the knee joint, or some rheumatic immune diseases that cause pain in the knee when squatting. 3. may be due to osteoarthritis of the knee joint, due to degeneration of the articular cartilage, the subchondral bone is exposed, and the pressure on the knee joint rises sharply when squatting. The pain will occur when the inflammatory response increases. When squatting knee pain occurs, the patient should first rest in bed, avoid strenuous activities, and give appropriate medication to relieve symptomatic treatment. If the symptoms are not relieved within a short period of time and the pain is progressively aggravated, it is important to go to a regular hospital in time to improve the MRI examination of the knee joint and choose a reasonable treatment method after the cause is clear.