Pregnant women’s chest tightness and shortness of breath may firstly be a physiological phenomenon, which needs to be relieved by resting, deep breathing and inhaling oxygen. Secondly, it may also be caused by bronchial asthma, pregnancy heart disease, etc., need to take medication for the cause, as well as general measures to regulate. 1. Physiological phenomenon: the uterus of pregnant women in the late stages of pregnancy continues to grow, may be on the chest cavity or cardiopulmonary compression, some pregnant women in the activities of chest tightness and shortness of breath. At this time, pregnant women need to stop activities in a timely manner, and take a semi-recumbent position, deep breathing, for the lack of oxygen is more serious pregnant women can be low-flow oxygen to alleviate the symptoms. 2. Bronchial asthma: If pregnant women with bronchial asthma during pregnancy will also have the manifestation of chest tightness and shortness of breath, at this time you need to use salbutamol aerosol, terbutaline aerosol and other β2 agonists, as well as budesonide aerosol, fluticasone aerosol and other glucocorticosteroids under the guidance of a doctor. Some patients can also receive oxygen through mask or nasal cannula to relieve the symptoms of hypoxia. 3. Pregnancy heart disease: If pregnancy heart disease leads to chest tightness and shortness of breath in pregnant women, oxygen inhalation can be given as prescribed by the doctor. For patients with cardiac insufficiency, it is necessary to use digitalis, digoxin and other cardiac drugs, as well as isosorbide nitrate, thiomethylalanine and other vasodilators as prescribed by the doctor. Pregnant women chest tightness and shortness of breath may also be caused by pneumonia, anemia and other diseases. It is recommended that pregnant women exclude physiological phenomena caused by chest tightness and shortness of breath, need to consult a doctor in time, under the guidance of the doctor to choose the appropriate measures for treatment.