Most of the swollen and painful knee joints are seen in synovitis, which is related to excessive activity or trauma, and most of them need to be treated with non-steroidal drugs, like ibuprofen, celecoxib, aminophenol dihydrocodeine, diclofenac sodium. On the one hand, they can reduce the inflammatory exudate of the synovial bursa, and on the other hand, they can relieve the pain caused by the inflammation of the synovial bursa as an anti-inflammatory and analgesic. Some patients with synovial bursa inflammation in the knee originate from bacterial infections, mostly during colds, and have increased white blood cells and neutrophils during routine blood tests. For these patients, oral anti-inflammatory drugs can be taken, mostly cephalosporins, such as cefotaxime, cefazolin sodium, cefminox, and cefadroxil, all of which have anti-inflammatory effects. If the swelling and pain of the knee joint is not due to increased inflammatory exudation of the synovial bursa, but directly caused by trauma, such patients do not need to take oral anti-inflammatory drugs to treat the pain, and generally use braking, oral blood-boosting drugs or dehydrating drugs to promote the swelling of the affected limb.