The white vaginal discharge after pregnancy may be caused by the change of hormone level in pregnant women, cervical maturation in late pregnancy or vaginitis, if necessary, further medical examination can be conducted to clarify the cause and choose the corresponding intervention treatment. 1, the change of hormone level in pregnant women: the hormone level in pregnant women can change significantly after pregnancy, and under the stimulation of estrogen and progesterone, milky white vaginal discharge may appear, which is a normal This is a normal physiological phenomenon that can subside on its own and does not require special treatment; 2. Cervical plugs fall off: When pregnant women are in late pregnancy, due to the maturation of the cervix, the cervix will naturally shorten and the mucus plugs at the end of the cervical canal will be discharged from the vaginal opening. The color of simple cervical mucus plug is transparent or milky white, if mixed with blood, it may be red. If it appears before full term, you need to be alert to preterm labor, it is recommended to consult a doctor in time, if it appears after 37 weeks of pregnancy, it is a normal physiological phenomenon and does not need special treatment; 3, vaginitis: after pregnancy, women are susceptible to bacterial attack due to decreased immunity and resistance, increased secretions, etc., leading to Vaginitis and other diseases, at this time will appear vaginal white discharge, accompanied by itching and other symptoms of the pubic area, at this time need to promptly go to the hospital for examination, so as not to trigger the inflammation of the upstream infection, affecting the growth and development of the fetus. The treatment is mainly topical clindamycin ointment or some lotion to clean the vulva, all pregnancy medications should be applied under the guidance of a doctor. Women who are pregnant should pay special attention to personal hygiene, keep their vulva clean and dry, change their underwear in time, wear loose, breathable clothing and not too tight-fitting clothes to avoid bacterial growth.