The hilum pulmonis is wider than the normal standard, and there is an oval depression in the center of the medial surface of the lung called hilus of lung,hilum pulmonis, which is where the main bronchi, pulmonary arteries, pulmonary veins, and bronchial arteries, veins, lymphatics, and nerves enter and exit. There is an oblong depression in the middle of the mediastinal surface, called the hilum pulmonis. The upper part of the right pulmonary hilar is composed of the right upper pulmonary artery and branches of the pulmonary veins, and the lower part is composed of the right lower pulmonary artery; the left pulmonary hilar is composed of the left pulmonary artery and branches of the upper pulmonary veins. On the posterior-anterior chest image, the left pulmonary hilar is slightly higher than the right pulmonary hilar, and on the lateral chest image, the right pulmonary hilar is mostly located anteriorly and the left pulmonary hilar is located posteriorly. The abnormal changes such as enlargement and decrease in size suggest lesions. To prevent widening of the pulmonary hilum, we should keep the air circulation and sunlight in the living room, and open the doors and windows three times a day for 20-30 minutes each time. Qigong, health care, taijiquan and other items for exercise, can make the physiological functions of the body to restore normal, gradually restore health, enhance the ability to resist disease. Pay attention to the cold and keep warm, and abstain from sexual intercourse. Diet is mainly high in protein, sugar, vitamins, fresh vegetables, fruits and beans. Smoking and alcohol should be avoided. In addition, rest, adequate nutrition, appropriate outdoor activities and strengthening the resistance of the whole body are still important conditions to overcome the disease.