There is a possibility of recurrence after ovarian chocolate cyst surgery because chocolate cyst itself is due to endometriosis in the ovary and periodic bleeding before the cyst is formed, and the endometrial cells with activity after surgery are likely to bleed again with the menstrual cycle, which will lead to recurrence. Therefore, for patients with post-operative ovarian chocolate cysts, clinical treatment with Daphylline is often given, usually for about six months, with the main purpose of avoiding the possibility of recurrence. For patients with post-operative ovarian chocolate cysts, it is important to review ultrasound regularly. In the absence of discomfort, it is recommended that ultrasound examinations be done every six months, mainly to understand whether there are recurrent lesions in the pelvis.