Object : This study was carried out to examine the effect of Hwangryunhaedoktang on the liver and kidney of rats induced by carbon tetrachloride and ethanol. Methods : The histopathological changes were examined after preadministration of 100 and 200mg/100g Hwangryunhaedoktang. Results : The perivenular ballooning degeneration and infiltration of basophilic inflammatory cells were decreased in the experimental group when compared with the control group. No abnormalities were observed in the kidneys of both groups. But, interstitial nephritis was observed only in the experimental group. Conclusion : This study suggests that Hwangryunhaedoktang may be of benefit to the prevention of hepatotoxicity induced by carbon tetrachloride and ethanol, and it is more effective in high dosages.