Three plus white blood cells in pregnant women are more serious. It is recommended that pregnant women must drink more water, pay attention to perineal hygiene, and effectively wash the perineum every day to prevent further aggravation of retrograde infection. In this case, if at the same time there are symptoms such as urinary urgency and urinary pain, it is recommended that pregnant women take oral antimicrobials for treatment, as many antimicrobials can not be used during pregnancy, it is recommended that the use of cephalosporins, this type of is safe and will not affect the development of the fetus, the most common is cefdinir, cefaclor, and so on. If there is fever and hematuria at the same time, it is recommended that intravenous antimicrobials, also cephalosporins, including ceftriaxone sodium, cefmetazole sodium and so on.