Kawasaki disease is a syndrome of mucocutaneous lymph node syndrome, the cause of which is unclear, as is the pathogenesis of the disease. The pathological changes are mainly systemic vasculitis, which is prone to secondary damage to the coronary arteries. It has a relatively long course. If fever occurs, the fever can persist for 1-2 weeks. Generally, special medications such as aspirin are required for treatment. Usually, treatment is for 3 days, and after the fever subsides, the dosage is gradually reduced, maintained for 6-8 weeks. If there is secondary coronary artery damage, the duration might be longer. In cases of severe coronary damage, the duration of the disease may be several months or even years, depending on the specific condition of the disease. Kawasaki disease is a self-limiting disease. Usually, if there is no significant coronary artery damage, after symptom control, comprehensive examinations are conducted 1 month, 3 months, 6 months, and 1-2 years after discharge, mainly heart examinations such as electrocardiograms and echocardiograms. If there is a combination of coronary artery aneurysms, long-term follow-up is required, with an examination every six months to one year until the coronary aneurysm disappears or if there is combined damage to the coronary artery structure, long-term follow-up is needed.