With the development of electro-optical technology, medicine has also enjoyed the dividends of technological development in terms of technological innovation, and arthroscopic technology is a good example. In the past, diagnosis of joint diseases was mainly done through filming, CT or MRI, but these imaging tests also have their limitations and cannot visualize the internal condition of the joints. The emergence of arthroscopic technology has solved this problem well. Arthroscopic technology is a very good means of examination. By observing the internal condition of the joints, it can provide a detailed understanding of the intra-articular lesions, and is a very good supplement to imaging examinations. Imaging examination of the joints of the shoulder, knee, ankle and knee does not visually clarify the lesions. Through arthroscopy, the condition can be clarified, and rotator cuff injuries of the shoulder joint, anterior and posterior cruciate ligaments as well as meniscus and articular cartilage injuries of the knee joint can be detected and the specific severity of the injuries can be determined, which can be a very good guide for the subsequent treatment methods. Arthroscopic technology is also a very good treatment tool. There are certain conditions that are more amenable to the use of this technique. Knee, shoulder, elbow, wrist, or ankle joint inflammation in common parts of the joint, through the knee arthroscopy can be very good observation of synovial inflammation of the joints, the examination process, you can carry out the drug irrigation, synovial cleaning and other means to make the inflammation can be well restored. During the arthroscopy, the damaged tissues can be repaired at the same time. In addition, ligament damage and tissue compression in the wrist, ankle and other joints can also be detected and effectively treated through arthroscopy. Arthroscopic techniques have the advantage of being less invasive and faster recovery. The interior of almost all joints can be observed and treated arthroscopically. However, this tool is currently most commonly used to examine or treat a number of disorders of the knee, shoulder, elbow, ankle, hip, and ankle joints.