With three rib fractures, the criteria for healing include no localized compression pain, no longitudinal percussion pain, no localized paradoxical activity, and X-ray showing continuous bone scab formation at the fracture site. 1. No local compression pain: in the early stage of fracture, due to bleeding and exudation of large amount of inflammatory mediators, it will stimulate the nerves and thus cause severe pain, when the hematoma is mechanized, the inflammatory reaction disappears, and there is no local compression pain, which indicates that the fracture has entered the healing stage or has healed. 2. No longitudinal percussion pain: longitudinal percussion after fracture will cause longitudinal percussion pain due to the stressful contact of the fracture ends. The disappearance of longitudinal percussion pain indicates that the fracture has become one. 3. No localized abnormal activity: when the fracture site is connected as one, the basic anatomical relationship is restored, and the abnormal activity will disappear. 4. X-ray shows that there is continuous bone scab formation at the fracture site: bone scab is the main part of bone connection in fracture healing, when the fracture site forms continuous bone scab, it means that the fracture is healed. Fracture healing is a dynamic process, the rehabilitation process needs to go to the hospital regularly for review, and be guided by a professional doctor for rehabilitation.