Cisplatin is an inorganic complex formed by a central atom of platinum surrounded by chlorine and ammonia atoms in the cis position in the horizontal plane, Cisplatin is one of the most effective anticancer drug, widely used against various tumor such as testicular tumor, brain tumor, ovary tumor, bladder carcinoma, colon cancer etc. However its clinical use has been limited by nephrotoxicity, ototoxicity , gastrointestinal disturbances, myeloscrppression and allergic reactions. In these toxicities, dose related and cumulative nephrotoxicity is the major dose limit factor. So, to evaluate the protective effect of aspalactone on cisplatin nephrotoxicity in rats, both compounds were given intraperitoneally, Protective effects of aspalactone against nephrotoxicity of cisplatin were observed when aspalactone was administered to rats 1hr beforecisplatin injection. Hepatotoxicity induced by combination treatment of cisplatin and aspalactone was not observed. The present results indicate that aspalactone may provide protection against cisplatin nephrotoxicity, when it is given 1hr before cisplatin injection.