The treatment of cruciate ligament injury can be carried out in two ways, conservative treatment and surgery, as follows: First, conservative treatment: mild cruciate ligament injury, not completely torn, can improve joint symptoms through conservative treatment, such as exercising the strength and intensity of the muscles around the knee, joint cold compresses, swelling subsided and changed to hot compress treatment to promote injury repair. You can also use medications such as celecoxib capsules, loxoprofen sodium tablets, and herbicidin tablets to promote the repair of the injury and the reduction of swelling. Second, surgical treatment: In case of severe cruciate ligament injury, i.e., complete rupture, ligament reconstruction surgery is required. Generally, it is necessary to wait for about a week after the swelling of the joint has subsided and perform cruciate ligament reconstruction with arthroscopy to restore the integrity and continuity of the ligament, as well as to restore the stability of the knee joint. Patients will likewise require postoperative rehabilitation to promote knee stability and prevent re-injury to the cruciate ligament.