Pregnant women need to have an electrocardiogram (ECG). Electrocardiogram is mainly through the way of electric waves to record the heart beating, there is no effect on the health of pregnant women and fetus, generally pregnant women in early pregnancy and late pregnancy need to do electrocardiogram examination, the doctor needs to grasp the situation of pregnant women’s heart function. General pregnant women in early pregnancy and late pregnancy should be routine electrocardiogram examination, such as early pregnancy electrocardiogram examination found that the combination of serious heart disease, need to terminate the pregnancy in time. Because with the increase of pregnancy weeks, the pregnant woman’s body load will increase, the heart function will also increase, especially in labor and delivery, the demand for cardiac function is relatively high, so in late pregnancy should also be routinely do electrocardiogram examination, if the heart function is abnormal, the need to terminate the pregnancy in a timely manner to avoid accidents. It is recommended that pregnant women should follow the doctor’s instructions for regular checkups during pregnancy, and should consult a doctor in time if they have chest tightness, dyspnea and other uncomfortable symptoms.