Abstract:Objective: To investigate the regulatory effects of puerarin on the levels of transforming growth β1 (TGF-β1) and α-smooth muscle actin (α-SMA) in rats with alcoholic injury liver. and to probe into the prevention and cure mechanism of puerarin on alcoholic liver injury. Method: Seventy five SD rats were randomly divided into 5 groups：normal group 10 rats. model group 20 rats (alcohol etc mixed liquor twice per day), control group 15 rats (alcohol etc mixed liquor+ complex biejia ruangan pian 1 g·kg-1·d-1), puerarin high dose group 15 rats (lcohol etc mixed liquor+puerarin tablet 1.5 g·kg-1·d-1), puerarin low dose group 15 rats (lcohol etc mixed liquor+puerarin pill 0.75 g·kg-1·d-1). After 8 weeks. femoral vein blood of the rats were taken out in all rats and then rats were sacrificed to obtain liver samples. Samples were collected to observe pathological change and to detect expression of TGF-β1 and α-SMA in liver tissue. Result: Pathological change and hepatic fibrosis integration of liver tissue in model group were significantly changed compared with other group (P<0.05). Meanwhile the level of TGF-β1 and α-SMA in both high and low dose puerarin groups were significantly decreased compared with model group (P<0.01). Furthermore the level of α-SMA of puerarin high dose group were significantly decreased compared with control group (P<0.05), whereas there was no significant difference between puerarin low dose group and model group. Conclusion: There was an ascend in the level of TGF-β1 and α-SMA expression in rats with alcoholic injury liver. and puerarin has regulatory effects on the expression of TGF-β1 and α-SMA.