Kawasaki disease is a global, febrile disease that affects children, with 80% occurring in children under 5 years of age. it is less common in children under 1 year of age and over 10 years of age. 4 The hotter weather in the south causes more children to develop the disease (our experience). Up to 25% of patients are complicated by coronary artery dilation (i.e.: about 1/5 – 1/4 of Kawasaki disease cases can be complicated by coronary artery dilation). In children who have developed coronary artery dilatation, 50% recover to normal. 20% eventually develop stenosis. 10% may die due to severe coronary artery stenosis. Coronary artery stenosis occurs in 20% of those with coronary artery dilatation >5 mm. Those with coronary artery dilatation >8mm or more usually have difficulty returning to normal. Long-term ultrasonographic follow-up is required. When coronary artery stenosis appears, the proximal end of the vessel is usually dilated. The dilated coronary artery is prone to thrombosis and embolism due to slow blood flow, and the patient may have acute angina symptoms. Therefore, patients who develop coronary artery dilatation should pay great attention to it. Take medication for a long time. Regular outpatient follow-up. Certain young people, such as those who developed coronary artery disease in their 25-6 to 30s, and some even had heart stents placed inside their hearts, may have suffered from Kawasaki disease when they were young.