In the clinic, most of the causes of patellar malalignment, that is, patellar dislocation, are due to direct or indirect external force on the knee joint. If the patella dislocation occurs, in the treatment, first of all can be under anesthesia for manipulation of reset, reset after the success of the knee joint should be given to the straight position fixed, can be taken to the plaster cast or support fixed. At the same time in the knee joint area, but also external application of blood circulation and eliminate blood stasis, swelling and pain relief cream, because the patella dislocation will lead to joint capsule traction injury. In addition, acupuncture, moxibustion and other methods can be used or the patient can be instructed to take oral bruxism medication. If the patient has a habitual dislocation of the patella, surgical treatment may be considered, which may include incision for tightening of the joint capsule and ligaments, and postoperative braking of the knee joint.