PROBLEM TO BE SOLVED: To provide a grain powder-containing dough having heightened strength, and a grain powder-containing food product produced by using the same, and having excellent texture.SOLUTION: There are provided: a production method of a grain powder-containing dough having heightened strength in which bio-nanofibers are blended into the grain powder-containing dough; the grain powder-containing dough obtained by the method, and having heightened strength; a production method of a grain powder-containing food product using the grain powder-containing dough; and the grain powder-containing food product obtained by the method.SELECTED DRAWING: None【課題】強度が高められた穀物粉含有生地およびそれを用いて製造される食感の優れた穀物粉含有食品を提供する。【解決手段】バイオナノファイバーを穀物粉含有生地に配合することを特徴とする、強度が高められた穀物粉含有生地の製造方法、該方法により得られる強度が高められた穀物粉含有生地、該穀物粉含有生地を用いることを特徴とする穀物粉含有食品の製造方法、ならびに該方法により得られる穀物粉含有食品。【選択図】なし