Kawasaki disease, also known as mucocutaneous lymph node syndrome, commonly affects children and infants under five years old. It is an acute, systemic vasculitic disease. Clinically, it is primarily characterized by persistent fever, bilateral conjunctival congestion, cracked lips, strawberry tongue, rash, hard swelling of hands and feet, fingertip desquamation, and enlargement of cervical lymph nodes. In severe cases, it can lead to coronary artery dilation, coronary artery aneurysms, and thrombotic obstruction. The exact cause of Kawasaki disease is not very clear, but it is mainly believed to be related to infections. The probability of secondary recurrence of Kawasaki disease is about 2%, and its causes mainly have to do with infections, immune factors of the body, genetic factors, and so on.