Strains of the chest may be associated with significant pain and limitation of deep breathing, as they are usually combined with soft tissue contusions of the muscles. For direct violent injuries, there is also a combination of sternal or rib fractures and pulmonary contusions; the patient may have cough, sputum, or blood in the sputum, and may even have fever; laboratory tests may also show an increased blood count; cardiac marker measurements in severe soft tissue injuries may show a significant increase in myoglobin, and chest pain may be more pronounced when the patient is breathing deeply. Therefore, after the diagnosis is confirmed, external fixation with a chest band should be applied promptly, and pain medication should be given to prevent infection. Avoid strenuous activities during the treatment period to avoid aggravation of pain symptoms, and serious trauma may also be complicated by the occurrence of hemopneumothorax, and if necessary, closed chest drainage is required.