To provide powder mix for grain food, whereby grain food can be produced with excellent moldability and texture without being affected by general freezing harm, and to provide frozen dough using the powder mix, and grain food using the powder mix and the frozen dough.

The powder mix for grain food at least includes grain flour including rice flour, powder of isomaltulose, and either or both of trehalulose and trehalose, with these blended together. For 100 pts.wt. of grain flour, the blended quantity of powder of isomaltulose is 1-20 pts.wt. and the blended quantity of either or both of trehalulose and trehalose is 1-15 pts.wt.