Rib ectropion is a manifestation of the lower ribs protruding outward, which requires further judgment to determine, and the clinical judgment methods mainly include visual diagnosis, palpation and imaging examination. 1. Visual diagnosis: the patient lies flat on the examination bed, relaxing the body can reveal that the lower ribs are protruding from the chest wall. 2. Palpation: by touching from top to bottom, the lower ribs can be found to be protruding. 3. Imaging: mainly through CT examination, it can be determined that the lower ribs are protruding to the outside. Rib protrusion itself is closely related to rickets, which is mainly related to calcium deficiency and can be further tested by blood sampling. Once the corresponding condition is found to have arisen, it should be observed in a timely manner, and standardized treatment should be carried out under the guidance of clinicians.