A small hole in a child’s heart is a common term, the standardized medical name is congenital heart disease. In this case, parents can first conservative observation, because most of the congenital heart disease if the lesion is relatively mild, there is a certain tendency to self-healing. The first thing parents should do is to do dynamic cardiac ultrasound for their children to observe whether the small holes above the child’s heart have a tendency to gradually shrink, and if so, continue to observe. In addition, if the hole in the child’s heart does not gradually shrink, and if the child has frequent colds, pneumonia and other complications, the child should be treated with cardiac catheterization in a timely manner. By sealing the hole through cardiac catheterization, the child’s quality of life can be effectively improved.