First of all, your chocolate cyst and dysmenorrhea are both manifestations of endometriosis; It is easy to relapse after surgery from endometriosis to ovarian chocolate cyst. It is recommended to take Noride injection after operation. Noride injection is used to inhibit ovarian ovulation and form "drug-induced pseudomenopause", so that menstruation will not come temporarily, and the endometrial tissue of ectopic ovary will not grow and bleed, and it will not recur. Because the first three months after operation are more important, it is generally recommended to give 2-3 injections after operation, once a month/kloc-0.