Many pediatric patients with congenital heart disease have a significant bulge at the median incision site after heart surgery, and the heart surgery is successful, but the child has a “chicken chest”, many families are concerned about this, why is this? Most children with congenital heart disease require surgical correction through a median sternotomy approach. The sternum is sawed open in the middle of the surgery, and after the surgery the doctor will use absorbable PDSII silk or wire to sew the sternum back together. The sternum is a flat bone located in the middle of the anterior chest wall, for younger patients, most of the components of the sternum are still cartilage, sternal bone is not very hard, suturing the sternum with a wire will produce a lifting force to the middle of the sternum, coupled with the human chest itself is barrel-shaped, so it is easy to cause the sternum to lift. Is there any effective treatment? In fact, for babies with sternal augmentation, families do not need to worry too much because children’s bones develop with good shape. With growth and development, the breast augmentation will gradually return to normal, which may take 1 to 2 years or longer. Older children can be encouraged to do more chest expansion exercises, which will help the chest shape return to normal. We hope that the families of the affected children can rest assured and encourage them to take part in more sports and not to adopt some so-called chicken breast treatment indiscriminately.