Objective:To investigate the protective effect of astilbin on warm ischemia/reperfusion-induced liver injury and to study the related mechanism.Methods:C57BL/6 mice were randomly divided into four groups (n=8): sham-operated group (Sham),model control group (I/R),low dose astilbin treatment group (10 mg/kg) and high dose astilbin (40 mg/kg) treatment group. Mice in the two treatment groups were intraperitoneally injected with astilbin 24 hours and one hour before ischemia. Then 70% hepatic ischemia/reperfusion model (the left and middle hepatic lobe) was established. Mice in the I/R model control group and the sham operation group were administered with the same volume of normal saline. The blood sample and liver tissue samples were collected 90 min after ischemia and 6 h after reperfusion. Serum ALT activity was detected as an indicator of liver function damage and the content of MPO in liver tissues were detected by ELISA. The pathological changes of the liver were observed. The expression of IL-10 in liver tissues was detected by Western blotting and the expression of IL-10 mRNA was detected by semi-quantitative RT-PCR.Results:Astilbin treatment can effectively lower the serum ALT level and MPO level in the liver tissues in some I/R mice. It could also improve the pathological manifestations of the liver. Compared with the I/R model control group,IL-10 protein levels gradually increased in the two treatment groups,which was consistent with the result of RT-PCR (low dose group P<0.05; high dose group,P<0.01).Conclusion:Astilbin can effectively reduce the inflammatory response after liver warm ischemia-reperfusion induced injury,effectively improve the mouse liver function and pathological damage,which might be related to the upregulation of IL-10 expression in the liver tissues.