Mild contusions of the lungs heal spontaneously, but moderate and severe contusions of the lungs do not heal on their own and require aggressive medication or surgery. When the chest is bluntly traumatized, the lungs will be damaged accordingly under the influence of the blunt force and the inflammation of the chest, and the respiratory function will be affected, which is a pulmonary contusion, and hypoxemia often occurs. In the case of mild contusion of the lungs, there are no obvious symptoms, only mild blood exudation and a small amount of pleural effusion, which can be self-absorbed after rest and treatment. If it is a moderate or severe contusion of the lungs, shortness of breath, breath-holding, hemorrhage and respiratory failure will occur, which can be cured by anti-infective and oxygenation treatments such as ceftriaxone and roxithromycin under the guidance of a doctor, or major chest surgery to treat pulmonary hemorrhage and bronchial rupture. Once found lung contusion, need to go to the hospital in time, under the guidance of the doctor standardized treatment.