Chocolate cysts are clinically very likely to recur even after surgery, but there are people who do not experience recurrence, mainly because the ectopic endometrium has been completely removed during the surgery, so it will not recur. It is recommended that after surgery for chocolate cysts, it is best to treat with Daphne for a period of 3-6 months, mainly to prevent recurrence. After the surgery, we must do regular ultrasound examination to find out whether there are cysts in the localization of the ovary, and according to whether there is dysmenorrhea, and then to find out whether there is endometriosis again in other locations, and it is recommended to do ultrasound examination every half a year, and to do the examination at any time when there is any abnormality.