In acceptable Chinese medicine, the annual of Pueraria lobata (Puerariae Flos) has been acclimated in appraisal to annul the problems associated with booze bubbler and alarmist injury. In this study, we advised the hepatoprotective furnishings and its mechanisms of tectoridin, an isoflavone glycoside from the annual of P. lobata (Willd.) Ohwi. Booze (5g/kg) was accustomed orally every 12h for a absolute of three doses. 1h afterwards the endure dosage of ethanol, tectoridin (25, 50 and 100mg/kg) was accustomed intragastrically 5 times in three afterwards days. The mice were sacrificed at 4h afterwards tectoridin treatment. Peroxisome proliferators-activated receptor alpha (PPARalpha), sterol authoritative element-binding protein (SREBP)-1c and their ambition genes were evaluated by biochemical appraisal and quantitative real-time polymerase alternation acknowledgment (qPCR). Mitochondria were abandoned for the mitochondrial permeability alteration (MPT) and film abeyant (DeltaPsi(m)) assay. Astute booze acknowledgment resulted in the cogent access of the alanine aminotransferase (ALT), aspartate aminotransferase (AST) and triglyceride (TG) levels and hepatic mitochondria dysfunction apparent as the access of MPT and the abatement of DeltaPsi(m). However, tectoridin appraisal badly attenuated these effects. In addition, tectoridin appreciably alleviated the over-production of thiobarbituric acid-reactive substance. Furthermore, tectoridin inhibited the abatement of PPARalpha announcement and its ambition genes, including medium-chain acyl-CoA dehydrogenase (MCAD), acyl-CoA oxidase (ACO) and cytochrome P450 4A (CYP 4A) at mRNA and agitator action levels. These abstracts showed that tectoridin adequate adjoin ethanol-induced alarmist steatosis mainly through modulating the agitation of PPARalpha alleyway and ameliorating mitochondrial function.