Most children with congenital heart disease have preoperative augmentation of the precordial region or pheochromocardium of different severity, and the median incision will make it obvious after surgery; children without preoperative augmentation or pheochromocardium may also have changes in the median incision after surgery. The chicken chest control instrument can be used to flatten and fix the sternum to make it grow smooth and beautiful. Precautions are as follows: 1. Start using the chicken breast treatment device after discharge from the hospital and continue to wear it for 6 months. 2, 24 hours continuous use, charging 3 times a day for 30 minutes each time. 3.Please tighten the band when using (to the extent that the skin is not strangled red, can be stretched into the pinky finger for the appropriate elasticity). 4, hot weather in summer, can cause prickly heat, eczema growth, can be appropriate to reduce the wearing time, wear the prevention and control instrument should avoid skin infection due to prickly heat eventually lead to sepsis. 5.Sleeping in supine position or side lying position can be adopted to avoid pressure on chest wound. 6.The scar patch can be used repeatedly and cleaned with cool water, not with hot water or sterilized water. It can be used at the same time with the chicken breast control device, and the scar patch is used for 6-9 months. Regarding whether the wound scar is obvious or not, it mainly depends on the individual’s body quality and the choice of wound sutures. After the removal of sutures, silicone gel type drugs can be used for external application (e.g. Bessho Trace) to soften the scar tissue and make the wound smoother.