Swelling of the knee may be caused by over-exercise of the knee, or due to degenerative arthritis, synovitis and meniscus injury of the knee. Rapid swelling reduction methods include physical therapy, medication and surgical treatment. 1. Excessive exercise: Excessive exercise of the knee may cause congestion and edema of the knee, first of all, it is recommended that patients reduce or stop strenuous activities of the knee joint, ice packs or cold towels cold compresses on the knee, and at the same time elevate the knee of the affected side higher than the heart. 72 hours later, the patient can choose to heat compresses and ultrashort wave and other physical therapy to accelerate the blood flow around the knee joint, rapid reduction of the swelling. 2. Degenerative arthritis: degeneration of the knee joint may also cause swelling and pain in the knee joint, patients can choose medication to assist in the treatment, such as oral meloxicam, celecoxib and other drugs to reduce the inflammatory response. Patients with fluid accumulation can also be treated with fluid extraction from the knee joint cavity while injecting drugs such as sodium vitrate. 3. Synovitis: including traumatic synovitis, tuberculous synovitis and gouty synovitis can cause knee swelling and pain, early oral antibiotics such as cephalosporins, anti-tuberculosis drugs such as isoniazid and colchicine and other anti-gout medication. In severe cases, minimally invasive arthroscopic cleanup can be performed. Diseases that cause knee swelling and pain also include knee fractures and bone tumors around the knee joint, etc. You should go to the hospital in time to see a doctor to identify the cause of the disease and then give targeted treatment. The above medications should be used under the guidance of a doctor and avoid self-medication.