Some chest tightness is caused by temporary emotional agitation, which requires deep breathing and trying to calm down. Some are manifestations of chronic diseases and so on, which require oxygen and further examination and treatment: in case of pleural effusion, fluid should be pumped and released; in case of pneumonia, anti-inflammatory treatment is needed; in case of heart disease or heart failure, the original disease should be treated. Chest tightness can occur in people of all ages. Younger or children, under the excitement of anger or laughter, may not be able to get up the air and chest tightness, which requires trying to calm down, deep breathing, and automatically get better after a while. For older patients with primary diseases, such as cardiopulmonary diseases, they need to be treated with oxygen while examining the cause of the disease and treated according to the cause. Patients with coronary artery disease require medication or intervention to unblock the coronary arteries. Patients with heart failure require cardiac diuretic therapy to correct heart failure. Patients with lung inflammation need antibiotics, etc. Some people may also experience chest tightness after strenuous exercise and require oxygen and correction of acid-base balance and carbon dioxide balance disorders. If chest tightness occurs after trauma or compression, it is necessary to go to the hospital for examination to prevent bleeding in the chest cavity. To sum up, the treatment of chest tightness is different for different age groups. If a critical situation occurs, the first thing you need is rest, oxygen, timely medical examination and targeted treatment.