This study was designed to investigates the effects of Korean pueraris radix water extract in Al(Aluminum) administered rats. Forty-eight male Sprague-Dawley rats weighing $100{pm}10g$ were used for this experiment and divided into following 6 groups; control group, 3% pueraria radix in water extract group, 1000 and 2000ppm Al group, 1000 and 2000ppm Al group with 3% pueraria radix in water extract group. The Al administered rats were given 1000 and 2000 ppm of $Al_2(SO_4)_3$ disoved in the distilled water. The Al content in the rats tissue of Al administered group was lower than in the rats tissue of Al group with 3% pueraria radix in water extract group. Plasma levels of renin and aldosterone activity was increased by Al administration group, compared with 3% pueraria radix in water extract group and Al administred group. Glutamate oxaloacetate transaminase(GOT) and Glutamate pyruvate transaminase(GPT) were increased in Al-administered group and lower in the 3% extracts of pueraria radix in water extract group. Lactate dehydrogenase(LDH) was lower in the 3% extracts of pueraria radix-Al group than in the Al group. This results suggested that pueraria radix in water extract group has a lowering effects on the accumulation of Al and it is belived that the pueraria radix in extracted water group has some protective effects to Al administered in rats, but the mechanism of these effects was obscure.