Abstract:A certain quantity of Polygonum hydropiper can promote the growth of yeast in sweet rice wine starter. To analysis the single factors during the making process of rice wine starter，and to choose the saccharifying power and fermenting power as the evaluation index， the final results of orthogonal test showed that the optimum making process of sweet rice wine starter as follows：Polygonum hydropiper 6 %，koji 4 %，the incu原 bation time 72 h. And liquor-making experiments showed that the sweet rice wine made by the rice wine starter was a kind of good alcoholic beverages，which had sweet taste and fresh flavor.