It is a normal physiological phenomenon that leukorrhea increases after pregnancy. Normal leukorrhea is milky white, transparent and odorless. During pregnancy, due to the influence of estrogen and progesterone, the vaginal mucosa becomes congested and edematous, the permeability of the vaginal mucosa increases, and the exudate increases significantly compared to normal, and the secretion of glands in the cervical canal also increases during pregnancy, so the vaginal secretion becomes thicker and the leucorrhea is clear and watery or yellowish, without odor. If there is an increase in leucorrhea during pregnancy, accompanied by odor, vulva itching, yellowish green color, you should go to the hospital in time to check, according to the results of the examination and follow the doctor’s advice to choose the appropriate treatment plan, usually pay attention to the pubic hygiene and cleanliness, change underwear diligently under the sun, in early pregnancy to prohibit sexual intercourse, to avoid the occurrence of miscarriage.