The symptoms of chest tightness, shortness of breath, and the desire to take a deep breath can be divided into two types according to the causes: functional chest tightness and pathological chest tightness. The factors causing functional chest tightness mainly include poor ventilation in the living environment, excessive mental stress, excessive fatigue, lack of sleep, and emotional depression. For the symptoms of functional chest tightness and shortness of breath, no special treatment is needed. We can improve the living environment, pay more attention to rest and relaxation, and observe whether the symptoms are relieved and improved. Pathological chest tightness and shortness of breath are mostly seen in respiratory system, cardiovascular and local organ tissue tumor diseases, such as bronchial asthma, acute pulmonary infarction, emphysema, rheumatic heart valve disease, etc. It is necessary to go to a regular hospital to receive further detailed examination to promptly identify the specific cause and then carry out symptomatic standardized treatment.