The indications for arthroscopic surgery for ACL avulsion fracture include joint instability, combined knee, meniscus or other important structure injuries. In young patients, after diagnosis of ACL tear, the instability of the joint function can easily lead to repeated sprains of the knee, in which case arthroscopic surgery is needed for reconstruction. In addition, there are many patients who experience knee instability after surgery, which also requires arthroscopic surgery. In addition to this, combined knee, meniscus or other significant structural injuries with definite cartilage damage to the knee require arthroscopic surgery, and older patients need to be considered for arthroscopic surgery based on their level of athleticism as well as their own condition. Arthroscopic anterior cruciate ligament avulsion reconstruction surgery, the current technology is mature, less traumatic, and faster recovery, it is recommended to go to a regular hospital, under the guidance of the doctor to improve the relevant examination, and in the postoperative period, but also to increase the muscle strength exercises and coordination exercises, if necessary, to wear protective gear.