The most commonly used drugs after surgery for chocolate cysts are GnRh-a drugs or denogestrel; GnRH-a drugs are injected subcutaneously or applied intramuscularly; denogestrel is an oral drug that should be applied continuously every month and every day, and there will be a small amount of vaginal bleeding after application, which can be continued as long as the examination is completed. In order to reduce the chance of recurrence of chocolate cysts after surgery, in fact, it is also the most crucial in the operation. The foci of chocolate cysts should be removed as much as possible during the operation, and the adhesions caused by the foci should be separated as thoroughly as possible, so that the post-operative medication may have a more adequate effect.