The normal vaginal opening is round and the front and back walls are usually closed to prevent bacterial infection. The virginal vaginal opening is often covered by the labia minora. If the labia minora are pushed apart, the vaginal opening is almost completely covered by the hymen, and women who have had sex may have traces of a cracked hymen at the vaginal opening. The vaginal opening is the junction between the vagina and the external environment, at the back of the vestibule. The shape of the vaginal opening varies with the shape of the hymen, which varies in shape and firmness. The hymen of a virgin is simply a piece of membrane of varying thickness that surrounds the vaginal opening in a circular or crescent shape. Women who have had sex have hymen scars that are flesh-like. If there are abnormal discharge from the vaginal opening, itching sensation, lumps and other discomforts, it is recommended to consult a doctor in time, under the guidance of the doctor to clarify the cause of the disease, and then for needle sex treatment and treatment.