The woman must use paper to wipe after urinating, because the female urethra and vagina together, and the female vulva has a lot of pubic hair, after urinating there will inevitably be some urine residue left on the pubic hair, if not wipe with paper urine residue will be deposited in the female vulva, and then get to the top of the shorts. In the long run, the shorts cover the woman’s vulva, easily leading to the growth and reproduction of bacteria in the vulva, easily leading to inflammation of the vulva. So women need to wipe with paper after each urination, and the direction of the wipe is from to back, that is, from the vagina to the anal direction wipe.