There are many reasons why young people present with chronic chest pain, and there is a clear correlation with age as well as living environment and personal habits. Patients who have been smoking for a long time are prone to cough and sputum, that is, to develop chronic obstructive pulmonary disease, and even to develop pulmonary alveoli. Patients may also experience chest pain, especially after exertion, and in severe cases, rupture of the alveoli may induce spontaneous pneumothorax, and patients may also experience significant chest tightness and shortness of breath, and in severe cases, respiratory distress, which may require surgery if necessary. In addition, patients who have been smoking for many years are also very likely to induce the occurrence of lung tumor, and the typical manifestation is chest pain, and some of them even have symptoms such as coughing up blood, obvious loss of appetite and losing weight.