The present invention relates to a producing method of soybean protein powder for producing an instant soybean. The producing method comprises: preparing soymilk capable of producing tofu in a tofu producing process boiling and concentrating the soymilk preparing soybean protein powder by spraying and drying the same and instant packaging the soybean protein powder.COPYRIGHT KIPO 2016두부제조공정상 두부제조가능한 콩물에 있어서, 상기 콩물을 끓여 농축한후 이를 분무건조하여 만든 대두단백질분말을 인스턴트포장함을 특징으로 하는 즉석두부제조용 대두단백질분말 제조방법이다