The recovery time for pleural effusion due to fracture varies depending on the amount of fluid or the severity of the injury. Pleural effusion due to fracture is usually caused by contusion of the chest wall and lungs due to rib fracture or sternal fracture, and the effusion is caused by bleeding of the blood vessels inside. A small amount of effusion can be absorbed on its own even without extraction or closed chest drainage, and it can be completely absorbed in 3-4 weeks after the injury, so that the situation can be completely improved. In case of moderate or severe effusion, in addition to closed chest drainage to drain the effusion, it may be necessary to open the chest for ligation of blood vessels, hemostasis or lung repair surgery, and the recovery time will be relatively long, ranging from 4-8 weeks.