Knee effusion can be roasted with a lamp. Knee joint effusion is caused by infection (knee tuberculosis, septic arthritis, etc.), trauma (meniscus injury, cruciate ligament injury, etc.), inflammation (gouty arthritis, rheumatoid arthritis, rheumatoid arthritis, etc.) and degenerative diseases (knee degenerative disease), etc., leading to increased amount of synovial fluid in the knee, resulting in swelling in the joint. The common treatments for knee joint effusion are: ① primary treatment, according to the cause of the treatment, such as anti-tuberculosis treatment for those caused by tuberculosis of the knee joint; ② Chinese medicine treatment, you can take oral or topical Chinese medicine, acupuncture treatment; ③ physical therapy. Roasting with a lamp generally refers to the TDP medical lamp in physiotherapy, which can be used as an adjunctive therapy, such as in the process of acupuncture treatment, but should not be used as the only treatment program. When there is a knee joint effusion, the first time to the hospital for standardized treatment.