Sex does not change the size of ovarian cysts. Sex does not cause ovarian cysts to show symptoms of rapid enlargement or shrinkage, but by having sex may cause ovarian cysts to develop tip torsion. The ovarian cyst itself has a certain weight, and the stimulation of sexual intercourse leads to twisting of the tip, resulting in acute lower abdominal pain with clinical symptoms such as nausea and vomiting, etc. Once this symptom occurs after sexual intercourse, the patient should go to the hospital in time to deal with it, and most of them need surgery to relieve the corresponding clinical symptoms, and the removed cyst should be sent for pathological examination. If the diameter of ovarian cyst is greater than 5 cm, surgery should also be given as soon as possible.