Adnexal cysts with a diameter of 6cm are relatively large and serious. It is recommended that surgery be performed as soon as possible, preferably 3-7 days after menstruation, after outpatient laboratory tests with no other abnormalities, and after outpatient examination with no contraindications to hospitalization for surgery. The surgical procedure can be laparoscopic surgery or open surgery, mainly based on their own specific situation to decide. Laparoscopic surgery after surgery because the wound is relatively small, so the recovery is relatively fast, open surgery is relatively slow recovery, self-selected and removed tumors must be sent to the pathology laboratory. If the cyst is a chocolate cyst, there is a possibility of recurrence after the operation, and it is necessary to continue the treatment with medication for a period of 3-6 months after the operation.