Kawasaki disease itself is a self-limiting disease and most of them have a good prognosis, so for most children with Kawasaki disease, it does not affect their later life. Recurrence is seen in 1-2% of children. Children without coronary arteries are discharged from the hospital for a comprehensive examination including physical examination, electrocardiogram and echocardiogram at 1 month, 3 months, 6 months and 1-2 years. Coronary aneurysms occur in 15-25% of children without effective treatment and should be followed closely over a long period of time, once every 6-12 months. In addition, most coronary aneurysms disappear on their own within 2 years after the disease, but they often leave functional abnormalities such as wall thickening and reduced elasticity, and large aneurysms, which should not disappear completely, often form thrombosis or luminal stenosis. So from this aspect, there is still a certain impact for a small number of children, and the key is to make sure to review.