Most of the multiple hypodense translucent areas in both lungs are manifestations of obstructive emphysema, which is categorized into limited and diffuse obstructive. Multiple low-density translucent areas in both lungs are diffuse obstructive emphysema, which is seen in chronic bronchitis and bronchial asthma, and may also be pulmonary hernias. 1. Chronic bronchitis: the main manifestations are increased, disorganized, twisted and distorted lung texture; increased translucency in the lung field and widening of the intercostal space. 2. Bronchial asthma: there is no obvious abnormality during the period of remission; chest X-ray can see the increase in the translucency of both lungs during the asthma attack, which is a state of excessive ventilation. Chest CT in some patients can see bronchial wall thickening, mucus obstruction. 3. Pulmonary hernias: small pulmonary hernias occurring in both lungs, which can be seen as multiple low-density translucent areas in both lungs on imaging, usually without symptoms, and can be ruptured by strenuous exercise to form pneumothorax. Please consult your doctor promptly and combine with other tests if necessary.