When a pregnant woman experiences heart pain, it is best to start with an electrocardiogram. It may be due to anemia, stress, high blood pressure, or the possibility of coronary artery spasm or insufficient blood supply to the heart muscle. Pregnant women sometimes suffer from stress, poor rest, and strain, which may also indirectly lead to heart pain. Some patients may have high blood pressure and excessive pressure load on the heart, which may also indirectly lead to angina pectoris symptoms. When pain occurs, an electrocardiogram should be done in time to assess whether there is a problem with the heart. If there is an abnormal condition of the electrocardiogram, it is recommended that further cardiac ultrasound and myocardial enzymology laboratory tests should be performed.