The hymen is a ring-shaped structure within the outer opening of a woman’s vagina, a fold of mucous membrane located at the opening of the vagina that will have a small aperture in the center. The hymen consists of localized fibrous connective tissue and a few blood vessels. The shape of the hymen varies somewhat from woman to woman. The hymen is usually smaller and thicker at puberty, and as a woman’s body matures, it gradually becomes larger, thinner, and more resilient. The hymen covers the vagina near the external opening, with a small hole in the center called the hymenal aperture, usually ring-shaped, sieve-shaped, crescent-shaped, transverse septum-shaped and so on. The hymen provides some protection to the vagina. Inside the hymen there are blood vessels, nerve endings, and connective tissue that bleed when the hymen is ruptured. The hymen is usually ruptured during the first sexual intercourse, strenuous exercise, accidental injury, and so on. In the clinic, after the hymen rupture must pay attention to the hygiene of the vulva, usually wash the vulva diligently in life, avoid strenuous exercise.