Swelling of the knee after exercise may be caused by over-exercise, or it may be caused by degenerative diseases of the knee joint, and the treatment methods include physical therapy, medication and surgery. 1. Excessive exercise: long-term climbing, running and other physical exercise may cause congestion and edema of the synovial membrane and other soft tissues of the knee. It is recommended that patients reduce the amount of exercise, take more rest and elevate the affected limbs. In the acute stage after exercise, you can choose to ice the knee to relieve swelling. Usually when resting, you can choose the towel hot compress knee, massage knee, fascia gun and other ways of treatment. 2. Degenerative lesions: Degenerative lesions of the knee joint may lead to increased impingement in the knee joint, which may also cause knee swelling. Medications such as oral ibuprofen and celecoxib can be administered to reduce the inflammatory response. Oral medications such as chondroitin sulfate and glucosamine are taken to nourish the joint cartilage. In severe cases, minimally invasive surgical arthroscopy can also be considered for joint cleaning. If the patient feels swelling after exercise, or with other symptoms, should go to the hospital in time, after the cause is clear to give targeted treatment. Drugs need to be used under the guidance of a doctor, avoid self-medication.