Chicken breast is a common chest wall deformity in childhood, often manifested as the sternum protruding forward and the adjacent costal cartilages and ribs being concave, which is called chicken breast because of its outward appearance resembling the breast of a chicken or pigeon. Clinically, chicken breast is mainly categorized into congenital chicken breast and acquired chicken breast according to the etiology. Congenital chicken breast is mainly caused by genetic factors; acquired chicken breast is mainly seen in rickets, which is one of its main clinical manifestations. The clinical manifestations of the disease are mainly symmetrical, subsymmetrical, and anterior protrusion of the sternal stalk. Sternum is the bone in the center of human chest, divided into three parts: sternal stalk, sternal body, and raphe; in general, the sternum is almost parallel to the back, and the angle with the ground is close to perpendicular. In general, the sternum is almost parallel to the back and the angle with the ground is close to vertical. Chicken breast is mainly characterized by the upward bending of the lower rib cartilage, resulting in the protruding sternum. Chicken breast is often in the 4th to 8th rib cartilage, causing the sternum to move forward. Patients with chicken breast are advised to go to regular hospitals to find out the cause of the disease and determine whether to treat it according to the degree of the disease.