The choice of management of a cystic mass in the left adnexa is determined by the size of the mass. For example, if the left adnexal cystic mass is relatively small, only 2-3 centimeters, you can follow up with an ultrasound every three months or six months. If there is no tendency for the mass to increase in size, follow-up can be continued. If there is a tendency of enlargement, you can choose surgery or take oral medication, such as Gui Zhi Fu Ling capsule for medication. When the left adnexal cystic mass is larger, around 5 centimeters, surgery should be chosen, because the cyst is so large that there is no way to eliminate it, and there is no way to eliminate it through medication, so surgery should be performed, and it is recommended to choose laparoscopic left cyst debridement surgery, which can recover better and cause less damage to the body.