The general symptoms of slow development of children with congenital heart disease mainly include failure to meet weight standards, short height, and affect intellectual development, as follows: 1, weight failure, after children with congenital heart disease, there will be a chronic lack of oxygen in the body, which makes children’s digestive capacity more fragile. Often the appetite for food is not particularly good, so there will be lower weight than children of the same age; 2, manifested as short height, because congenital heart disease leads to poor appetite for food, so nutrition often can not keep up, will cause short height; 3, affect the intellectual development of children, congenital heart disease hypoxia symptoms are very serious, especially the cyanotic congenital heart disease, will cause serious mouth and lips bruising and hypoxia This often affects the development of the brain, resulting in a low level of intelligence in children.