Orthopantomogram of the chest is one of the most commonly used examinations in clinical practice and can examine many lesions in the chest. Pulmonary lesions can be examined for pneumonia, atelectasis, pulmonary solids, lung tumors, pulmonary tuberculosis, etc.; pleural cavity can be examined for pleural effusion, pneumothorax, etc.; mediastinoscopy can be examined for enlarged mediastinal shadow, mediastinal occupancy, etc.; tracheal lesions can be examined for proper position of tracheal intubation, displacement, etc. In addition, orthopantomogram can also be used to check the position of tracheal tube and its displacement. In addition, orthopantomogram of the chest can also examine the heart, and can check the size of the heart shadow, whether there is calcification of the aorta and pulmonary artery, etc. In conclusion, orthopantomogram is one of the most commonly used clinical examinations to examine many chest lesions, and CT and other related examinations are required only when further examination is needed.