Abstract:Results indicate that Sini Decoction has a significant effect of anti-lipid peroxidation of its components,Radix Aconoti Praeparata and Radix Glycyrrhizae can significantly supress lipid perxidation of myocardial ho-mogenate ,while Rhizoma Zingiberis cannot. The decoction can effectively scanvenge oxygen free radicals ,each compo-nent haring similar effert to some extent.