Kawasaki disease, also known as mucocutaneous lymph node syndrome, is a disease with unclear etiology and unclear pathogenesis. It commonly affects infants and young children, with 80% of cases occurring in children under five years old, and the male to female incidence ratio being 1.5:1. Kawasaki disease is a self-limiting disease, and most cases have a good prognosis. Recurrences are seen in 1%-2% of affected children. Children without coronary artery lesions also need a comprehensive physical examination, generally recommended at one month, three months, six months, and annually or biannually for up to two years, including physical examination, electrocardiogram, and echocardiography. Without effective treatment, 15%-20% of affected children may develop coronary artery aneurysms, and they should be closely followed long-term, with follow-up every six to twelve months. Coronary artery aneurysms often resolve themselves within two years after the disease, but often leave behind abnormalities such as thickened vessel walls and reduced elasticity. Large aneurysms often do not completely resolve and may lead to thrombosis or narrowing of the vessel lumen. Kawasaki disease is also a cause of acquired heart disease, so timely and effective treatment is essential to prevent cardiac issues. Once Kawasaki disease develops, it is advised to seek prompt hospital treatment to manage the condition effectively.