Posterior cruciate ligament tear needs to be treated according to the degree of injury, which generally includes joint braking, rest, physical therapy, medication and surgery. 1. When the injury is mild: it refers to a partial tear of the posterior cruciate ligament, at this time, conservative treatment is generally used, including early cold compresses and late hot compresses and other physiotherapy, joint braking, rest, anti-inflammatory drugs such as ibuprofen and other analgesic treatments. 2. When the injury is more serious: when the posterior cruciate ligament is completely torn or when the conservative treatment is ineffective and accompanied by other injuries, surgery is recommended. Surgery is usually performed one week after the injury when the swelling subsides to restore the integrity and continuity of the ligament, and is combined with anti-inflammatory and pain relieving drugs such as Mazolin and Ibuprofen after the surgery. During the recovery period, rehabilitation exercises should be carried out under the guidance of the doctor. For posterior cruciate ligament injuries, it is recommended to go to the hospital in time to clarify the extent of the injury, and to carry out regular treatment as soon as possible to avoid adverse consequences. The above drugs should be used under the guidance of a doctor, avoid self-medication.