The impact of high white blood cells on the fetus in late pregnancy needs to be analyzed in terms of circumstances, physiological generally have no effect; pathological have a certain impact. 1. Physiological leukocyte hyperplasia: pregnant women are more likely to have physiological leukocyte hyperplasia in late pregnancy, which is related to the body’s hormone secretion or external environmental stimuli, generally if there are no special symptoms, there is no need for special treatment, and it will not affect the growth and development of the fetus. 2. Pathological leukocytosis: commonly caused by bacterial infection or hormone therapy. For bacterial infections that cause elevated white blood cells, such as urinary tract infections, vaginitis, pelvic inflammatory disease, etc., you need to go to the regular hospital in time to receive diagnosis and treatment to avoid affecting the health of the fetus, and you need to be treated according to the specific conditions of the bacterial infection. It is suggested that pregnant women need to exclude physiological leukocyte increase first, and then actively go to the regular hospital to receive examination and treatment.