Abstract: Scientists have payed more attention on soy saponins in these years. Statistics on soy saponins studying in and out our country including the sources, distribution and structures etc had been concluded in this article. Soy saponins and it's unticarcinogenic effects were discussed in two aspects: immunity modulation and untimutation. Then we suggest that soy saponins had powerful potent being developed into a new unticarcinogenic drug.

Key words: soy saponins, unticarcinogenic effect