Objective: To investigate the action and mechanism of Bupleurum chinense SD and Schisandra chinensis Turcz extract on liver fibrosis in rat.Methods: The model was prepared by injection of 40% CCl 4 plant oil solution, then the enzyme active AST、AST、MAO、ALP、r-GT、TG in serum and MAO、ALP、GSH、TG in hemogeneous were measured by enzyme method, the level of Pc-Ⅰand PcⅢ were measured by radio-immunity. Results: Bupleurum chinense and Schisandia chinensis extract can reduce significantly enzyme active of ALT、AST、TG、MAO in serum of fibrosis rat, the GSH was elevated and the r-GT was not effect in serum, but it could reduce the level of MAO、ALP、Pc-Ⅰ、Pc-Ⅲ in the homogeneous, sometime the TG was increased and the GSH was not effect in homogeneous. The histopathology showed that Bupleurum chinense and Schisandia chineusis extract could get damaged liver cell back and reinforce the regeneration of hepatic cell. Conclusion:Bupleurum chinense and Schisandid chinensis extract the action of protective and restoration on injured liver cell, and its could eliminate the bile accumulation, to retard the fatty degeneration in fibrotie rat.