Labia minora adhesion is a condition in which the inner sides of the two labia minora stick to each other in the midline, usually with a small hole between the front of the labia minora adhesion and the underside of the clitoris, through which urine can drain. Labia minora adhesions are congenital abnormalities or acquired diseases. Commentators’ opinions differ, with some suggesting that it is due to local inflammation and estrogen deficiency, or as a result of labial fold variation and genital sinus underdevelopment. Most scholars currently agree with the former opinion. So what are the manifestations of labia minora adhesions? First of all, the child does not urinate well and the urine line often shoots upwards, so the mother notices the abnormalities in the baby’s vulva, the odor, and the invisibility of the external urethra and vaginal opening. Local examination reveals that the labia minora are glued to each other in the midline forming a film, smooth and slightly red with a blue film, and a small hole below the clitoris. Sometimes, when a small amount of urine remains near the vaginal opening and causes a pseudo-urinary tract infection, vaginal labyrinthitis can be induced locally. Labia minora adhesions usually occur in infancy and childhood, and are rare in children, and do not occur in newborns due to maternal estrogen influence. Selecting the best treatment method: treatment can generally be done with balloon catheter expansion under no anesthesia. Separation of the adherent parts is safe with 2 minutes of intraoperative time, no pain or bleeding in the child, and no damage to the external genitalia. After the operation, erythromycin ointment is applied and the treatment is continued for 7 days with satisfactory results. In recent years, the cure rate of children treated in the outpatient clinic has been clinically verified to be 100%, and all of them got satisfactory results!