Abstract: The Tea polyphenols(TP) and Ginseng decocum were given to the senile mice and the DNA methylating enzyme vitality tests in the liver of Grown mice and senile mice were assayed with the method of3H- methy1 incorporation,The results showed that the TP and Ginseng decoctum could obviously enhance the DNA methylating enzyme vitality in the live cell in senile mice,which showed the effect of anti- senility.It provided the objective dvidence for studying the mechanism of IP for anti- senility from the viewpoint of molecular biology.

Key words: DNA methylating enzyme Live cell Polyphenols Ginseng Anti- senility