Urethral cysts are usually caused by infection or congenital developmental abnormalities. 1. Infection: daily inattention to local hygiene, unclean sexual contact, etc., may be induced by urethral infection or urinary tract infection, local due to long-term inflammation and infection, thus inducing urethral cysts, which may be accompanied by frequent urination, painful urination, itching of the urethral opening, bleeding and other symptoms. 2. Developmental abnormalities: may be related to genetic factors, in the process of development if the glandular ducts are not fully developed or local urethral cell dysplasia, will lead to the blockage of the orifice of the paraurethral glands, the secretion can not be discharged, and it is easy to form urethral cysts. There are no obvious clinical symptoms at the initial onset, and when the size of the cyst increases, it can lead to difficulty in urination. If patients find themselves with urethral cysts, they should consult a doctor in time to clarify the specific cause and follow the doctor’s instructions for treatment.