OBJECTIVE: To investigate the preventive and therapeutic effect of Shuganning injection on alcoholic liver fibrosis (ALF) in model rats, and provide experimental basis for its clinical application for alcoholic liver disease. METHODS: 50 rats were enrolled and intraperitoneally given mixed liquid of 60% alcohol-corn oil-pyrazole to reduce ALF model. Another 10 rats were enrolled and intraperitoneally given normal saline, as normal control group. After 16 weeks, survived model rats (n=40) were randomly divided into model group, positive control group (Anluo huaxian pill 0.75 g/kg, ig), Shuganning injection high-dose, medium-dose, low-dose groups (4.8, 2.4, 1.2 mL/kg, ip), 8 in each group. Normal control group and model group were intraperitoneally injected equal volume of normal saline (5 mL/kg), administration groups were given relevant medicines, once a day, for 8 weeks; and modeling was contiuously conducted at the same time. After administration, body mass of rats was weighed, and the levels of liver function indexes [aspartate aminotransferase (AST), alanine aminotransferase (ALT)] and liver fibrosis indexes [hyaluronic acid (HA), laminin (LN), type Ⅲ procollagen (PⅢNP), type Ⅳ collagen (Ⅳ-C)] in serum of rats were detected. Liver index of rats was determined and pathological changes of liver tissue were observed. RESULTS: Compared with normal control group, body mass of rats in model group was significantly decreased (P<0.05); liver index, and liver function index, liver fibrosis index levels in serum were significantly increased (P<0.05 or P<0.01). Liver tissue showed steatosis, hepatocyte vacuolization, a large number of fibrous tissue deposition around portal areas and other pathological changes. Compared with model group, above-mentioned changes were improved significantly in administration groups (P<0.05 or P<0.01). CONCLUSIONS: Shuganning injection can obviously improve liver tissue damage of model rats with ALF, showing certain preventive and therapeutic effect on alcoholic liver disease.