Kawasaki disease, also known as mucocutaneous lymph node syndrome, has an unclear pathogenesis. The primary pathological change is systemic vasculitis. It commonly affects infants and young children, with 80% of cases occurring in children under five years of age. Kawasaki disease is a self-limiting condition, and most cases have a good prognosis. However, there is a 1% to 2% chance of recurrence. If not effectively treated, 15% to 25% of cases may develop coronary artery aneurysms. These aneurysms often resolve on their own within two years after the disease, but often leave behind abnormalities such as thickening of the vessel wall and decreased elasticity. Larger aneurysms may not completely resolve and can lead to thrombosis or narrowing of the vessel. Kawasaki disease is also one of the causes of acquired heart disease in children. Therefore, Kawasaki disease should be treated promptly and effectively to prevent severe complications.