Abstract:Popliteal cyst is a common disease, and there are many surgical methods. Previously, open resection to remove the cyst was the common treatment method, whereas with high postoperative recurrence rate. How to reduce the recurrence after arthroscopic resection remains the focus of current research. The recurrence of popliteal cyst after operation is often affected by many factors such as anatomy, primary cause, surgery and patient's own factors. Arthroscopic intraarticular disease management and cyst drainage are effective. Reasonable selection of arthroscopic approach is the key to successful operation. The cyst wall resection during the operation can further reduce the chance of the postoperative recurrent cyst, but attention should be paid to prevent the serious complications of the vascular and nerve injury of the posterior knee. In combination with relevant literature and a case, this paper focuses on the pathogenesis of popliteal cyst, the postoperative recurrence related anatomical factors and intra-articular diseases, diagnostic issue, arthroscopic surgical skills, key points and intraoperative pitfall, so as to improve the diagnosis and treatment and reduce postoperative recurrent cyst.