A method for producing powders for inhalation includes a first mixing step of stirring a first active ingredient and a carrier in the presence of a milling medium, and mixing the first active ingredient and the carrier while crumbling the agglomerates of the first active ingredient to obtain a mixture of the carrier and the first active ingredient; and a second mixing step of adding fine powders to the mixture obtained in the first mixing step, and stirring and mixing the mixture and the fine powders in the presence of a milling medium.