In the 8th month of pregnancy, the normal heartbeat of a pregnant woman is 60-100 beats per minute, and generally does not exceed 110 beats per minute. As the months of pregnancy increase and the fetus grows larger, the volume of the pregnant woman’s chest shrinks and the burden on the heart increases accordingly. At the same time, it is a normal physiological phenomenon for pregnant women to have an increased heartbeat in the second trimester due to changes in hormone levels, pressure from an enlarged uterus, increased blood volume during pregnancy, as well as poor rest and excessive stress. Pregnant women in the eighth month of pregnancy usually feel that the actions they usually do will not be tired, but at this time they will have a pounding heartbeat and gasping for air, which is called panic and shortness of breath. This is because in the process of pregnancy, in order to adapt to the growth and development of the fetus, the mother’s circulatory system has undergone a series of changes, do not worry too much. In the 8th month of pregnancy, you should pay attention to the obstetrical examination in the hospital once every 2 weeks, pay attention to balanced nutrition and diversified food, eat more fresh vegetables and fruits, avoid cold, spicy and hot food, ensure sufficient sleep at night, keep a good state of mind, also pay attention to count the fetal movement, if you feel that the fetal movement is reduced, you need to seek medical attention in time.