Knee cruciate ligament injury manifests itself in the form of knee pain, swelling, and limitation of movement. After the occurrence of knee cruciate ligament injury, there will be obvious pain in the knee joint, localized swelling, bruising, knee deformity, such as the occurrence of knee hyperextension or tibia shifted backward, localized concavity, limited knee activities, can not do flexion and extension activities, decreased knee stability, increased anterior-posterior mobility, walking with a weak leg in the knee joint, easy to fall. If the doctor checks the drawer test is positive. After the occurrence of knee trauma, if the above situation needs timely examination, do MRI film can determine the degree of injury, minor injuries can take conservative treatment, if the injury is more serious, usually need to take surgical treatment. Patients with knee cruciate ligament injury or the above symptoms, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.