In pregnant women, elevated white blood cells can be classified as physiologically elevated or pathologically elevated. Physiologic elevations commonly occur during the second trimester of pregnancy and during childbirth, and are usually associated with no other discomfort, fever or other symptoms. If the elevated white blood cells are accompanied by runny nose, sore throat, or even coughing, coughing, or frequent or urgent urination, it often indicates a bacterial infection caused by an infection in another part of the body. It is necessary to search for the site of infection and choose antibiotics that are safe for the pregnant woman and her fetus for effective treatment. In addition, close monitoring of body temperature and follow-up blood tests are needed to observe the efficacy of treatment and can be used as a basis for subsequent adjustments to the treatment plan.