Yellowing of the leukorrhea during pregnancy usually has no effect on the baby. However, it may have an effect if combined with other symptoms. Yellowish leukorrhea during pregnancy without odor, vulvar itching and other accompanying symptoms is considered to be the result of increased secretion of estrogen during pregnancy, which stimulates the vaginal mucosal cells and cervical mucosal cells to secrete more mucus, which is a normal physiological phenomenon and has no adverse effect on the fetus. However, if the leukorrhea has a distinctive odor or is accompanied by symptoms such as vulvar itching, you need to consider whether you are suffering from vaginitis. The most common form of vaginitis during pregnancy is mycosis fungoides. Candida in the vagina can travel up through the cervix and penetrate the fetal membranes to infect the fetus, causing preterm labor. In addition, when the fetus is delivered through the mother’s vagina, it can also be infected by Candida, causing oral candidiasis, such as thrush; some infants may also develop perianal candidal dermatitis. When the leukorrhea is yellow during pregnancy, it is recommended to use warm water to wash the vulva, and if there is no special need, do not use care solution to wash; change and wash the underwear every day, and put the underwear under the sun to sterilize, and if there is a combination of other symptoms, it is recommended to consult the hospital.