The effects of rib fractures on the lungs include the following: 1. It is the fracture pain that affects the lung activity, because after the fracture pain, especially there will be sharp pain, stabbing pain, not daring to cough and cough up sputum, and if the injury is more serious, there will also be associated bleeding, as well as local muscle contusions, when the lung activity will be reduced, the patient will consciously avoid coughing and deep breathing, which has an impact on lung ventilation and performing breathing exercises 2. If there are previous lung diseases or bad habits such as smoking, rib fractures, because they dare not cough or cough up phlegm, make the phlegm accumulate, which is not conducive to discharge, and easily cause infection and aggravation of lung diseases. 3. It is the rib fractures can directly stab the lung and pleura, which can cause serious lung contusions, or multiple rib fractures, which can directly affect the thoracic and lung movements and seriously affect breathing, which is a more serious The situation is more serious, while the accumulation of blood and fluid is most likely to affect breathing or cause infection, these situations need active symptomatic treatment.