目的　探讨血液流变学在过敏性紫癜患儿中的变化。方法　对 30例过敏性紫癜患儿急性期血液流变学进行测定。结果　过敏性紫癜患儿急性期存在高粘滞血症。结论　临床上积极预防和处理高粘滞血症 ,可缩短过敏性紫癜患儿疗程 ,防止复发。 Objective To investigate the changes of hemorheology in children with Henoch-Schonlein purpura. Methods The hemorheology of 30 children with Henoch-Schonlein purpura in acute stage was determined. Results Acute hypercholesterolemia in children with Henoch-Schonlein purpura. Conclusion The clinical prevention and treatment of hyperviscosity, can shorten the course of treatment of children with Henoch-Schonlein purpura to prevent recurrence.