Objective To explore the know,diagnosis and relative measure of pregnancy arrhythmias by the electrocardiogram findings in 480 patients with pregnancy.Methods Form October 2008 to October 2010,480 pregnancy women were compared and analyzed by electrocardiogram findings.Results During the early pregnancy,the electrocardiogram was mild change.The electrocardiogram was significantly increased in late trimester of pregnancy.Conclusion Most women usually do not need special clinical treatment during pregnancy.And they can smoothly through gestation and during delivery.