Pneumomegaly of the right lung tip is mainly seen in the following three conditions: i. It is seen in young people who are taller and thinner, with higher pressure on the lung tip, which makes it easy to form pneumomegaly. Once a pulmonary blister is formed, the patient is prone to spontaneous pneumothorax and respiratory distress after strenuous exercise. If spontaneous pneumothorax occurs continuously, pleural repair needs to be given by a thoracic surgeon. Second, the patient has been infected with pulmonary tuberculosis in the past, and the pulmonary tuberculosis forms local pulling and twisting in the process of absorption and dissipation, resulting in the formation of pulmonary blister. This pulmonary blister is small, but it is also easy to rupture after strenuous exercise, forming a spontaneous pneumothorax, which can produce sudden respiratory distress and requires further treatment. Third, pulmonary blisters can also be seen in long-term smokers, bronchial asthma, chronic obstructive pulmonary disease recurrent attacks are prone to the formation of pulmonary blisters at the tip of the lung, and multiple pulmonary blisters. If one does not quit smoking, the patient’s lung function will further decline, and there is a risk of violent coughing during repeated infections, leading to the formation of respiratory distress due to rupture of the pulmonary blisters, which poses a risk to the patient’s life.