PROBLEM TO BE SOLVED BY USING SPECIAL EQUIPMENT such as grinder or high-pressure homogenizer, "Whole soybean drink containing okara contained in soybean as a raw material and containing whole hypocotyl while satisfying flavor and texture as well" And to provide a technology to manufacture with a simple equipment configuration, high yield, low power, low cost and short time.After drying the raw soybean, a husking shaft is taken out, the hypocotyl is heat-treated, and then the hypocotyl is air-ground and crushed at 55 C. or less, and the ratio of the particle diameter of 100 m or less is 90 % Or more, soybeans which pulverize soybeans from which the hypocotyls have been removed by air flow crushing at 55 C. or less and finely pulverize the soybeans so that the proportion of particle sizes of 100 m or less becomes 90% or more A powder preparation step, and a raw material compounding step of containing 0.05 to 2 mass% of the hypocotyl powder and 2 to 22 mass% of the soybean powder to obtain a whole-grain soybean drink.Selection drawing None【課題】「原料となる大豆に含まれるおから、および、胚軸を丸ごと含有させつつ、風味も食感も良好な全粒大豆飲料」を、グラインダーや高圧ホモゲナイザーといった特殊な機器の使用を前提とせず、簡易な設備構成で、歩留まりもよく低動力かつ低コストかつ短時間に、製造する技術を提供すること。【解決手段】生大豆を乾燥後、脱皮処理して、胚軸を取り出し、該胚軸を加熱処理した後、前記胚軸を、55℃以下で気流粉砕し、粒径100μm以下の割合が90%以上となるように微粉砕する胚軸粉末準備工程と、前記胚軸を取り出した大豆を55℃以下で気流粉砕し、粒径100μm以下の割合が90%以上となるように微粉砕する大豆粉準備工程と、前記胚軸粉末を0.05~2質量%、前記大豆粉末を2~22質量%含有させて、全粒大豆飲料とする原料調合工程を有する。【選択図】なし