The anterior cruciate ligament, also known as the anterior cruciate ligament, is located within the knee joint and connects the femur to the tibia, its main role is to limit excessive forward displacement of the tibia. This ligament injury should be treated promptly to achieve better results. Acute treatment 1, knee ice in order to reduce swelling and pain; 2, joint braking, if necessary, pressure bandaging to reduce re-bleeding; 3, if there is no condition of recent surgery patients, after the reduction of swelling and pain, knee mobility exercises and lower limb muscle exercises to promote the recovery of knee mobility; 4, combined with the medial collateral ligament injury, to be in the injury within 10 days after the deadline for emergency surgical treatment, such as the presence of If there is an impairment of joint movement, surgery should be performed after the range of joint movement is close to normal. The best treatment option for patients with complete rupture of the ACL is surgical reconstruction of the ACL, and the surgical treatment includes: 1, the best time for surgery is within three months after surgery; 2, arthroscopic ACL reconstruction is a mature technique, with little trauma and fast recovery; 3, the current surgical methods for ACL reconstruction include single-bundle reconstruction and double-bundle reconstruction, and there is no significant difference between the clinical effects of the two surgeries; 4, reconstruction of the ACL 4. The graft materials that can be used for reconstruction of the ACL include: autologous materials, such as N cord tendon and autologous patellar tendon, which have the best effect. If multiple ligaments are injured at the same time, additional allograft tendons or artificial ligaments can be considered; 5. The fixation materials needed for ACL reconstruction include metal interface screws, absorbable interface screws, etc.; 6.