If there is tightness in the chest and a tense feeling clinically called chest constriction. It can be caused by the following diseases: 1. The most typical is angina pectoris in patients with coronary heart disease. Chest tightness is a typical symptom of angina pectoris, angina pectoris is atherosclerosis involving the coronary arteries, making the myocardial blood supply, oxygen supply is impeded. When the myocardial oxygen consumption increases, the oxygen supply cannot keep up in time, which will lead to the occurrence of myocardial ischemia, and myocardial ischemia will send out warning signals, leading to angina attacks; 2. Lung diseases may also occur with tightness in the chest and a tense feeling, including lung infections, tumors, tuberculosis, trauma and so on. If it is a lung disease, it is often accompanied by coughing, coughing and other uncomfortable symptoms; 3, chest pleural disorders, such as pleural inflammation, pleural tumors, will also be accompanied by tightness in the chest, accompanied by a feeling of tightness, then it is necessary to go to the thoracic surgery department to be clear.