Percussion in chronic obstructive pulmonary disease is mainly characterized by hyperclear sounds. The clinical physical examination also needs to be combined with visual, palpation and auscultation. Visual examination of the patient with chronic obstructive pulmonary disease is consistent with the anteroposterior diameter of the thorax as a barrel-shaped chest, and in some patients, the widening of the inferior sternal angle may lead to a bulging abdomen, and may also show changes in respiratory movements, i.e., shallow breathing or open-mouth breathing. In addition, the patient should be palpated for sunken edema of both lower extremities. The patient may have a wet rales on auscultation in the presence of infection and croup in acute exacerbations. In addition to visualization, palpation, percussion and auscultation, imaging is required to confirm the diagnosis.