Leucorrhea is abnormal after menstruation, which may be caused by vaginitis, and it is recommended to go to the hospital for examination to make a clear diagnosis. If the leukorrhea is accompanied by odor and vulvar itching, you should pay more attention to it and treat it actively. If the leukorrhea is like soybean dregs or cheese, it may be mycosis vaginalis. If the leukorrhea is abundant and foamy, you may be suffering from trichomonas vaginitis. If the leukorrhea is watery and has a fishy odor, you may have bacterial vaginitis. If the leukorrhea is yellow and accompanied by lower back pain and lower abdominal pain, it may be cervicitis, endometritis and pelvic inflammatory disease. Specifically what causes, must go to the hospital for routine tests of leukorrhea, according to the results of the tests to let the doctor to make a clear diagnosis, to give the appropriate drug treatment. In normal life, you should often use warm water to wash the vulva, wear cotton breathable underwear, keep the vulva dry and hygienic.