The treatment time for Kawasaki disease is related to the patient’s condition and the timeliness of treatment, with most patients requiring 2-3 weeks of treatment; in a small number of patients, when treatment is not timely and serious complications arise, the treatment time is longer and may even cause sequelae. Kawasaki disease, or cutaneous mucosal lymph node syndrome, is commonly seen in children under 5 years of age and infants, and the pathogenesis is unknown and may be related to infection. High fever in Kawasaki disease can last for more than 5 days. If timely intravenous gammaglobulin is given, along with oral aspirin or treatment with hormonal drugs, the prognosis is better and the fever can be relieved within 1-2 days, and the patient can basically recover after 2-3 weeks of treatment. If treatment is not timely, hyperthermia can last longer and coronary artery aneurysms occur in 20-30% of patients with a longer treatment period. For patients with Kawasaki disease, they should pay attention to a light diet in daily life, consume easily digestible, high-protein, nutrient-rich liquid or semi-liquid food, and drink more water.