Clinically, if the ECG of a pregnant woman shows tachycardia, it needs to be analyzed specifically. If the tachycardia is sinus, it is necessary to find the specific cause, which may be related to the heavy burden on the heart at the end of pregnancy. In this case, the heart is compensated and the heart rate is accelerated, so no special treatment is needed. If the pregnant woman is anemic, she should actively correct the anemia, and the heart rate will slow down after correcting the anemia. If there is a problem with the conduction system of the heart itself, the fast heart rate may be manifested as paroxysmal supraventricular tachycardia, or there may be atrial tachycardia or junctional tachycardia, and the above-mentioned tachycardia is dangerous and needs to be treated. Pregnant women are not well suited for medication and can usually use physical methods such as compression of one side of the carotid sinus and compression of the eye, which may help change to a normal heart rate. If it cannot become normal heart rate, you need to choose esophageal pacing to adjust the heart rate to sinus rhythm.