After pregnancy, the body will undergo many changes, the pregnant woman’s chest tightness and shortness of breath generally appear in the middle and late pregnancy, excluding heart disease, is a relatively common phenomenon, because generally with the increase in body weight of pregnant women, the heart and lungs will bear more burden during pregnancy, and at the same time due to the increase in uterine volume, resulting in the reduction of the volume of the thorax, which will result in pregnant women’s shortness of breath, chest tightness. Some pregnant women may be due to cardiac neurosis as well as functional chest tightness caused by excessive tension, unpleasant things happen, etc., can be appropriate activities, pay attention to emotional regulation. There are also organic lesions, usually caused by the pregnant woman’s own heart disease, such as congenital heart disease or other types of heart disease. Generally at about 35 weeks, the pregnant woman’s heart load for the maximum, this time may be chest tightness, dyspnea more aggravated.