As the weather gets colder, for children who undergo surgery for precordial disease should pay special attention to the fact that if a cold pneumonia occurs will aggravate the heart disease. So parents should pay special attention to clothe their children, properly strengthen nutrition and do not apply flu vaccine to children to avoid allergies! If a cold occurs, treat it early! In case of pneumonia, go to the hospital and apply anti-inflammatory and appropriate cardiac diuretic drugs.