The symptoms of rib injury are threefold: first, the local injury leads to inflammatory edema of the tissues, which causes significant pain and is aggravated by coughing and breathing heavily. Second, there may be fractures of the ribs, and the fractured ends may injure the lungs and pleura, resulting in hemothorax and pneumothorax, and the hemothorax and pneumothorax will squeeze the lungs, resulting in pulmonary atelectasis, which will lead to a further decrease in ventilation and blood oxygenation, and suffocation. Thirdly, after the injury, due to the pain in this position of the thoracic ribs, we dare not cough, which will lead to the phlegm in the body can not be discharged through coughing, and after a long time, it will lead to infection in the lungs, high fever and phlegm sound inside the breath sounds, especially when using a stethoscope to auscultate, we feel that the phlegm sound in the lungs is particularly obvious. These are the three symptoms after rib injury.