Arthroscopic surgery is a minimally invasive surgical procedure in which the surgeon observes the tissue structure within the joint through the arthroscope and repairs the damaged tissue structure under the mirror. Arthroscopic surgery starts with the positioning of the operation location, then the preoperative preparation such as disinfection and spreading of towels, tourniquet, etc. A small incision is made according to the selected site, and then a metal tube with a lighting device is inserted into the joint cavity through the small incision, and then the internal structure of the joint cavity can be displayed on the monitor and enlarged. The surgeon can cut, suture, reconstruct and fixate the lesion according to what is seen under the scope, and then close the wound after the surgery. Compared with traditional open surgery, arthroscopic surgery has the advantages of less damage, less bleeding, etc. It has been widely used in meniscectomy, joint free body removal and treatment of intra-articular inflammation, etc., and has high clinical application value.