To determine whether there is a rib fracture, you can start from breathing pain, cough pain, fixed pressure pain, bone rubbing sound and squeezing pain, as follows: 1. Breathing pain: when you inhale deeply or exhale deeply, there is severe pain at the injured part, judging that a fracture may have occurred. 2. Cough pain: try coughing a few times, and if there is pain at a fixed part, judging that a rib fracture has occurred. 3. Fixed If there is pain in a certain area, try to press the painful area with your thumb or index finger, and there is severe pain, you can tell that a rib fracture has occurred. 4.Bone rubbing sound: If you press the painful area, and then take a deep breath, cough or squeeze hard, and a clicking bone rubbing sound occurs, you can usually tell that a rib fracture has occurred. 5.Squeezing pain: Squeeze the thorax with both hands from the front and back direction or from left to right The presence of pain mostly indicates that a fracture has occurred.