Arthroscopy is the application of endoscopy to examine and treat various joints, gradually replacing some surgical procedures that previously required incision due to their minimal invasiveness. The origin of arthroscopy comes from the invention of endoscopic technology. At present, arthroscopic technology has gradually become popular in China. Arthroscopic technology belongs to the category of minimally invasive surgery, as the name implies, has the advantage of being less invasive, such as the use of surgical incisions averaging 6-8 mm, each incision only requires one stitch, and the stitches can be removed one week after surgery, the joint cavity is not exposed during surgery, the joint is filled with fluid, and the surgery is performed in a liquid environment, which causes minimal interference with the joint cartilage, thus the recovery time after surgery is greatly shortened and the patient recovers quickly. Another advantage of arthroscopic technology is the image magnification effect. When performing an arthroscopy, the examination site is magnified 15-20 times by the imaging system, and the lesion is clearly displayed. In addition, the arthroscope is long and slender, allowing it to penetrate deeper into more hidden areas and to clearly reveal areas that are not easily observed by general incision surgery. As a result, the accuracy of arthroscopic diagnosis is much higher than that of clinical examination and other diagnostic methods. As the use of arthroscopy continues to expand, from the knee joint to the shoulder, ankle, elbow, wrist, interphalangeal joints, and even some extra-articular disorders can be applied, creating more favorable conditions for the diagnosis and treatment of sports injuries. The arthroscopy system consists of a fiber optic light source, a television camera system and auxiliary equipment. The fiber optic light source provides the light source for the arthroscope. The TV camera system will pick up the image and conduct it through the fiber optic cable and display it on the TV fluorescent screen. The auxiliary equipment includes the planing device, probing hook, basket forceps, grasping forceps, hook knife and push knife for arthroscopic surgical operation. The operation requires a tourniquet in the upper thigh with an inflation pressure of 300-600 mmHg to block blood flow and reduce bleeding. The incisions are usually 3, each about 6-8 mm long. First, an entry tube is placed through one incision to fill the joint cavity with saline, so that the arthroscope can be clearly displayed in the liquid environment. Sometimes several small incisions are added for observation and operation, and if autologous material is needed for graft reconstruction, a separate incision is made to obtain the material. The operation is usually performed with intravertebral anesthesia (lumbar anesthesia). After the operation, the surgical site is wrapped with a cotton splint or elastic bandage with pressure and braked for 6-8 hours. In recent years, along with the rapid improvement of China’s sports level and the vigorous development of mass sports, the number of sports traumatic disorders has increased significantly, among which joint disorders are the most common, and the sites of occurrence are knee, ankle, shoulder, elbow, hip, wrist and interphalangeal joint in descending order. Extra-articular disorders are also more common. Arthroscopic treatment of each site is described below.