PROBLEM TO BE SOLVED: To provide a novel anti-RNA viral agent by a mechanism of action different from existing anti-RNA viral agents, the novel agent being widely effective for RNA viruses.SOLUTION: The present invention provides an anti-RNA virus agent containing at least one selected from daidzein, daidzein glycoside, glycitein, glycitein glycoside, soybean processed goods, naked barley processed goods and pigeon wheat processed goods.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】RNAウイルスに広く有効であり、既存の抗RNAウイルス剤とは異なる作用機序による新たな抗RNAウイルス剤を提供すること。【解決手段】ダイゼイン、ダイゼイン配糖体、グリシテイン、グリシテイン配糖体、大豆加工品、裸麦加工品、及びはと麦加工品から選ばれる少なくとも一種を含有する抗RNAウイルス剤。【選択図】図1