The most common cause of chest congestion in the middle of the chest is because of heart disease, clinically common is coronary heart disease, due to narrowing of blood vessels or vascular spasm, resulting in local ischemia, causing chest tightness and heart congestion, which is usually aggravated in the active state and alleviated after proper rest, and this chest congestion often recurs. There are also stomach diseases, like superficial gastritis and gastric ulcer, which can also cause chest congestion, but this symptom often has a lot to do with diet. Another cause of heart blockage is lung disease, such as chronic bronchitis, emphysema, etc., will have pulmonary ventilation disorders, resulting in lack of oxygen, causing chest discomfort. So when there is a blockage in the chest, it should be investigated for the above diseases.