A little pain in the bottom, usually seen in the inflammation of the vulva and vagina, such as mycosis vaginitis, trichomonas vaginitis, bacterial vaginitis, as well as atrophic vaginitis in the elderly, may cause the occurrence of this situation. It is important to pay attention to the hygiene of the vulva, prohibit the consumption of spicy and stimulating food, change underwear and panties, do not wear tight clothes and chemical fiber clothing. At the same time, it is recommended to test the vaginal secretions to determine which type of vaginitis, and then select the appropriate drug treatment. If it is mycobacterial vaginitis, need to vaginal local application of nitrofurantoin systemic penicillin vaginal soft capsule; if it is trichomonas vaginitis, need to husband and wife with the use of metronidazole treatment; if it is the old age of atrophic vaginitis, the need to vaginal topical ointment estriol ointment.