It designates that the expedient which can designate these as the granule of same solubility vis-a-vis all powder raw materials to which as for this invention, sinkage characteristic to the water is bad, or is difficult to disperse melt in water, is offered as topic. According to this invention, while mixing the granule whose sinkage characteristic to the water is bad and the granule whose sinkage characteristic to the water is good it adds the emulsifier, it features that the mixed granule which coating is done is obtained with the emulsifier, production method of the same soluble granule is offered.本発明は、水への沈降性が悪く、水に分散または溶解しにくいあらゆる粉末原料に対し、これらを即溶性の顆粒にすることのできる手段を提供することを課題とする。本発明によれば、水への沈降性が悪い顆粒と水への沈降性が良い顆粒を混合しながら乳化剤を添加し、乳化剤でコーティングされた混合顆粒を得ることを特徴とする、即溶性顆粒の製造方法が提供される。