Knee injury is caused by trauma or chronic strain, mainly divided into the following areas: 1. Cartilage damage is due to a large number of sports or degenerative changes, resulting in cartilage wear, partial loss and chondritis. Treatment can be oral glucosamine sulfate to nourish cartilage and reduce activity is the basis. The pain can be treated symptomatically with oral non-steroidal anti-inflammatory drugs. 2, meniscal injury, is due to sprain or metamorphosis wear caused by meniscal tears, magnetic resonance imaging can be clear. 1-2 degrees of tears can be restored through conservative treatment, 3 degrees of tears need to be partially removed by arthroscopic surgery. 3, traumatic hyperplasia caused by synovial crease syndrome, is due to a variety of inflammatory diseases caused by intra-articular The synovial membrane is hyperplastic, thickened, embedded in the joint cavity resulting in pain, conservative treatment effect is poor, can consider arthroscopic partial synovectomy. 4, soft tissue injury is caused by trauma, through rest oral bruising Qi Li tablets and other blood circulation drugs, rest for a period of time can be recovered.