If the large bag is on the side of the vulva, suspect a vestibular gland cyst, and if there is pain, suspect an abscess. At this time, the first thing to consider is inflammation, anti-inflammatory treatment. Usually need to hang water, hang three days later when no pain, need to do surgical treatment. Surgery is usually done with a vestibular cystostomy because it is more thorough and drains the pus out of the large bag at the same time. If there is a lot of pus, a drain should be placed to prevent the sac from closing up on its own. The drain can be removed 3-4 days after the drain is placed. In addition, the stitches need to be removed one week after the surgery, and anti-inflammatory drugs must be taken at the same time as the surgery.