What causes high urine leukocytes in late pregnancy? Generally there is an increase in leukorrhea in late pregnancy, and sometimes urine tests may be affected by leukorrhea and have an increase in white blood cells. Generally viewed in two situations: 1, if the pregnant woman does not have urinary frequency, urinary urgency, painful urination and blood in urine, and the white blood cells in urine routine ≤ (+), it is possible that the increased white blood cells in urine caused by simple leukorrhea, this situation can drink more water, regular review, without antibiotic treatment. 2, if the pregnant woman exists urinary frequency, urinary urgency, painful urination or blood in urine urinary tract infection symptoms, and the white blood cells in urine routine The number of ≥ (++), this situation may be relatively serious urinary tract infection, it is recommended to take relatively pregnant women antibiotics less impact of this type of drugs, such as fosfomycin and so on for a short period of anti-infection treatment.