The causes of pain when coughing in the ribs after a fall include chest injury, rib fracture and so on. 1. Chest injury: after a fall, because of the wrestling position and some external violence stimulation, may lead to chest muscle and skin injury, coughing chest rise and fall, chest muscle pulling, thus pain. 2. Rib fracture: after a fall, the chest is impacted, resulting in rib fracture, when coughing or deep breathing, the thoracic movement caused by damage to the ribs to a certain degree of displacement, the fracture end of the friction with each other or directly stimulate the intercostal nerves to produce localized pain. If you need to find the cause of pain, you need to go to the hospital, complete the chest CT and other tests, and combined with the doctor’s examination, comprehensive judgment of the condition.