Objectives To explore the clinical features of incomplete Kawasaki disease (IKD) which presents with sterile pyuria in infant, in order to achieve early diagnosis and treatment. Methods A retrospective study of 15 infants with IKD was conducted in comparison with 29 patients who were diagnosed with KD according to the diagnostic criteria of American Heart Association 2004. Results Both KD and IKD groups had recurrent fever and poor response to antibiotic therapy. Hemoglobin level was signiifcantly lower in IKD group than in KD group at the onset or 7-d after onset (P<0.05). C-reaction protein (CRP) level was signiifcantly higher in IKD group than that in KD group at 7-d after onset (P<0.05). There were 4 patients with coronary artery abnormality, 2 patients with coronary artery dilation and 2 patients with coro-nary artery aneurysm. Conclusions For infant <1 year old who has pyuria ifrstly, continuous fever for over 5 days when treated by antibiotics and increasing serum inlfammatory markers, incomplete Kawasaki disease should be suspected and the cardiac ultrasound is recommended.%目的：探讨以无菌性脓尿为首发症状的婴儿不完全性川崎病（KD）的临床特点，以期早期诊断和治疗。方法回顾性分析以无菌性脓尿为首发症状的15例婴儿不完全性KD患儿的临床资料，与同期符合美国心脏协会2004年修订诊断标准的29例典型KD患儿进行比较。结果两组患儿均以反复高热、抗感染效果不佳为主要表现。与典型KD组相比，不完全性KD组在发病初期和发病7 d后血红蛋白较低，发病7 d后CRP较高，差异均有统计学意义（P<0.05）。4例不完全性KD患儿心脏超声检查发现冠状动脉变化，其中动脉扩张2例，冠脉瘤2例。结论对<1岁以尿路感染为首发症状的婴儿在治疗过程中如发热持续5d以上，伴血清炎症指标明显增高，且抗生素治疗无效时，应警惕不完全性川崎病可能，并尽早做心脏超声检查，了解冠脉病变，早期诊断及治疗。
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