Frequent chest tightness and shortness of breath are not necessarily lung cancer, but may also be caused by bronchial asthma, coronary atherosclerotic heart disease and other diseases. 1. Lung cancer: the occurrence of lung cancer may be related to smoking, environment, heredity and other factors, and the tumor cells may invade the trachea and pleura, leading to chest tightness and shortness of breath. Most of the treatments are surgery, which directly removes the tumor and surrounding tissues, and post-operative adjuvant radiotherapy, targeted therapy and other treatments can also be used to reduce the recurrence of the disease. 2. Bronchial asthma: due to environmental factors stimulating the trachea, the trachea spasm can lead to chest tightness and shortness of breath. Treatment can be prescribed oral formoterol fumarate tablets, aminophylline tablets and other dilatation of the airways to improve the symptoms of chest tightness and shortness of breath. 3. Coronary atherosclerotic heart disease: If the heart disease is caused by coronary atherosclerosis, the insufficient blood supply to the heart muscle can lead to the occurrence of chest tightness and shortness of breath. Treatment is feasible surgical treatment, such as percutaneous coronary intervention, so that the narrow part of the re-expansion, to restore blood flow to the heart. If symptoms such as panic, chest tightness and shortness of breath occur, it is recommended to go to a specialized hospital in time to identify the cause and then follow the doctor’s instructions for treatment.