The high percentage of neutrophils during pregnancy may be due to the following factors: 1. The high percentage of neutrophils after pregnancy is a normal physiological phenomenon, because women in pregnancy due to the increase in blood volume in the body of the whole blood cells rise, the high percentage of neutrophils is a normal manifestation, if the pregnant woman does not have fever and other abnormal symptoms, do not need to worry about it, there is no need for treatment and treatment. 2. The high percentage of neutrophils may be due to bacterial infection in the body, usually accompanied by fever and sore throat, pregnant women need to do further tests, such as C-reactive protein, to make a clear diagnosis, if it is caused by infection with bacteria or viruses, need to be treated promptly.