The difference between rib protrusion and rib ectropion mainly lies in the different parts of protrusion, etiology and treatment methods. 1. Different parts: rib protrusion occurs when the anterior and posterior diameter of the thorax increases. Rib protrusion occurs when the anterior and posterior diameter of the thorax increases, while rib ectropion is generally when the lower edge of the ribs exceeds the outer edge of the body, and is mainly manifested in the outward protrusion of the 7th to 10th ribs. 2. Different etiology: Rib protrusion is caused by unbalanced development of ribs during growth and development due to lack of calcium, vitamin D or broken ribs, resulting in protruding ribs. Rib protrusion may be due to pediatric respiratory abdominal movement amplitude is larger, the ribs are softer related to the cartilage development is not timely, there will be rib protrusion, and may even be congenital deformity. 3. Different treatment methods: rib protrusion can be corrected by surgery. Rib ectropion can be improved by wearing corrective support and surgery. Patients with protruding ribs and rib ectropion must consult a doctor in time and standardize the treatment under the doctor’s guidance.