Injuries to the rib cage are mainly seen in the thoracic department, and a 3D CT of the rib cage is needed to check the specific rib injury and the presence of fluid in the thoracic cavity, if there is fluid in the thoracic cavity, it is recommended to be hospitalized, and if the fluid continues to increase, closed drainage of the thoracic cavity is needed, because fluid in the thoracic cavity will affect breathing, and a large amount of fluid will deflate the lungs, thus inhibiting the role of breathing. When there is a large amount of pleural effusion, closed drainage of the chest cavity is needed to draw out the effusion and expand the volume of lung activity in the chest cavity.