目的　研究次声对大鼠血液流变特性的影响 .方法　使用频率 8Hz,强度为 90 d B与 12 0 d B的次声每日对大鼠作用 2 h,观察血液流变特性的变化 .结果　 12 0 d B作用 7d与 90 d B作用 14d后导致了血细胞比容、全血高切粘度、全血低切粘度等血液流变指标改变 ,而 12 0 d B作用 14d,90 d B作用 2 8d后这些变化的指标又都恢复 .结论　一定范围内的次声作用可引起强度相关的血液流变学改变 ,而且这些改变是可恢复的 . Objective To study the effect of infrasound on the hemorheological properties in rats.Methods The rats were treated with infrasound of 8 Hz, intensity 90 d B and 120 d B for 2 h, and the changes of hemorrheological properties were observed.Results After 12 days, the effect of B on 7d and 90d B resulted in changes of hemorrheological indexes such as hematocrit, whole blood high shear viscosity, whole blood low shear viscosity and so on after 14d and 90d B 12 days After 8 days, the indicators of these changes recovered.Conclusion Infrasound within a certain range can cause intensity-related hemorheological changes, and these changes are recoverable.