If vaginitis occurs after pregnancy needs to be treated, vaginitis after pregnancy is more common is mycosis fungoides, after pregnancy the content of glycogen in the vagina increases, the estrogen in women’s bodies is higher, which is conducive to the growth and reproduction of mold in the vagina. If the patient is left untreated, thrush can easily occur when the newborn passes through the birth canal during normal labor. If bacterial vaginosis occurs during pregnancy, chorioamnionitis or premature rupture of membranes, preterm labor and postpartum endometritis may occur, so bacterial vaginosis needs to be treated. Also trichomoniasis can lead to premature rupture of membranes, preterm labor, and the birth of low birth weight babies, and needs to be treated whenever vaginitis is detected.