目的　研究单纯性肥胖儿童血液流变学变化。方法　对 6 0例中、重度学龄期单纯性肥胖儿童和 6 0例正常体重健康儿童 ,应用全自动血粘度分析仪器检测 18项血液流变学指标。结果　与正常体重对照组儿童相比 ,肥胖儿童各血液流变学指标均有显著性差异 (P均 <0 0 1) ,表现为血粘度的增加和红细胞变形能力的减低。结论　单纯性肥胖症儿童即出现了血液流变学特性的改变 ,具有成人后发生动脉粥样硬化性疾病的潜在病理生理基础 Objective To study the changes of hemorheology in simple obesity children. Methods Totally 18 hemorheological indexes were detected by automatic blood viscosity analyzer in 60 moderate and severe simple obesity children and 60 normal healthy children. Results Compared with normal weight control group, the indexes of hemorheology in obese children were significantly different (all P <0 01), showing the increase of blood viscosity and the decrease of erythrocyte deformability. Conclusions Children with simple obesity present with changes in hemorheological properties that have a potential pathophysiological basis for the development of atherosclerotic disease in adults