Kawasaki disease, also known as cutaneous mucocutaneous lymph node syndrome, is an acute febrile illness with systemic vasculitis as the main pathologic change. Typical cases have more obvious clinical manifestations, but laboratory tests are not specific. The main changes include mild anemia, markedly elevated white blood cell count with leftward shifting of the nucleus, normal platelet counts in the early stages, markedly increased from the second week, and hypercoagulability of the blood. Blood sedimentation increased significantly, C-reactive protein was positive, globulin increased significantly, albumin decreased, anti-O and rheumatoid factor, anti-nuclear antibodies were negative, and some children had increased ghrelin or bilirubin.