The paper described the research result of the factors for speeding up mellowness of yellow rice wine by irradiation of low dosage. The effect of speeding up its mellowness was gained through the research of different dosage, irradiated temperature, different container, space of container and storing temperature etc. The experiment indicated that the best dosage was 100—600 Gy with 30—40℃ temperature; the pottery container for wraping wine was better than the glass one; the better space was 100 ml empty of one container and the storing time of irradiated wine covered 5—6 months.