PROBLEM TO BE SOLVED: To provide a production method of a powder for inhalation, allowing uniform distribution of an active ingredient and excellent dispersibility.SOLUTION: The present invention relates to a production method of a powder for inhalation, comprising: an anticholinergic agent-mixing step of stirring an anticholinergic agent and a carrier in the presence of a grinding medium and shredding the anticholinergic agent while mixing with the carrier to obtain a mixture of the carrier and the anticholinergic agent and a granule powder-mixing step of adding a granule powder to the mixture obtained in the anticholinergic agent-mixing step and stir-mixing in the presence of the grinding medium.
