Simple pain is the first symptom of many clinical diseases, there are external injuries such as skin abrasions, soft tissue injuries, meniscus injuries, ligament injuries and even fractures, can lead to pain; there is no obvious external injuries to the knee, joint osteophytes, osteoarthritis, synovitis can also appear knee pain. Different types of knee pain caused by different treatments: obvious fracture dislocation, ligament rupture, meniscus tear injury, these should be considered for surgery to be able to recover; soft tissue injuries, skin abrasions, bed rest for a period of time with little activity, the external use of blood circulation and blood stasis pain relief ointment can be conducive to the recovery; arthritis, osteophytes can be taken orally with aminoglucosamine, intra-articular cavity injections of sodium vitreous acid, and do massage, Physical therapy can help the symptoms recover; there is also a kind of bacterial infection inside the knee joint can also cause this kind of pain, you should consider intravenous infusion of cephalosporin and other antibiotics or do the debridement surgery.