The statement “ten sequelae of Kawasaki disease” is unscientific and not true. The sequelae of Kawasaki disease are mainly caused by cardiovascular involvement, such as decreased myocardial contractility, heart failure, myocardial infarction, peripheral arterial occlusion, coronary artery aneurysm, and so on, and there are more than ten. The majority of Kawasaki disease has a favorable prognosis and is mostly self-limiting, with a recurrence rate of approximately 1% to 3%, and multiple recurrences can occur. Coronary aneurysm occurs in 15%~25% of children with Kawasaki disease, and some of them are combined with coronary artery dilatation, accompanied by myocardial damage, myocardial ischemia, cardiac arrhythmia, etc. The disease is prolonged, and the treatment time is extended accordingly, affecting the health of the children, not only appearing in ten fixed sequelae. At the same time, if there are complications of coronary artery dilatation, small and medium-sized coronary artery aneurysms after effective treatment can reduce the symptoms, but often left with wall thickening and elasticity weakening and other functional abnormalities, the emergence of new sequelae. If the diagnosis of Kawasaki disease is considered, it is recommended to consult the doctor as soon as possible for formal treatment to avoid delaying the condition.