Chest congestion is usually called chest tightness. There are various factors that cause the symptoms of chest tightness: First, the most common factor is cardiogenic diseases, such as coronary artery disease unstable angina, myocarditis heart valve disease, hypertrophic obstructive cardiomyopathy, dilated cardiomyopathy, rheumatic heart disease will have the above symptoms. Second, respiratory system diseases will also have symptoms of chest tightness, such as chronic obstructive pulmonary emphysema, chronic pulmonary heart disease, pulmonary hypertension, chronic bronchiectasis will have the above symptoms. Thirdly, patients with cardiac neurocoronary disorders will also have symptoms of chest tightness when there is a disorder of plant nerve function. Fourth, endocrine metabolic diseases, such as thyroid dysfunction and adrenal cortical dysfunction, can also cause chest tightness. Fifth, women with disorders of estrogen and progesterone metabolism around the time of menstruation or during puberty will also have the above clinical symptoms.