The Research Committee of Ministry of Health, Labour and Welfare 'Study of treatment and long-term management in Kawasaki disease' reported the guidelines for catheter intervention in coronary artery lesion in Kawasaki disease in this paper. The contents include: (i) background and natural history of coronary artery lesion in Kawasaki disease: (ii) indication of catheter intervention; (iii) types of procedure, and their indication and care, (iv) institute and backup system; (v) the management after procedure, evaluation and follow up, and (vi) prospects, especially in relation to bypass surgery.