As long as the ovaries can still produce estrogen, endometriosis may come back, as will chocolate cysts. When doing cyst surgery, try to remove the visible lesions. This is true even for endometriosis in other parts of the pelvis. However, some lesions are deeply hidden and cannot be distinguished from the surrounding normal tissues. These tiny hidden lesions are another major source of postoperative recurrence. The biggest pain of recurrence is dysmenorrhea and pelvic pain. In view of the high recurrence rate of chocolate cyst after operation, it is suggested to use dinoprost or gonadotropin-releasing hormone agonist or combined with short-acting contraceptives for long-term management after operation, and strive to reduce the recurrence rate to the lowest level.