POWDER MEDICINE DOSING DEVICE

PROBLEM TO BE SOLVED: To provide a powder medicine dosing device capable of locking the sliding rotational operation of a sliding member when a user tries to hold the powder medicine dosing device upside down by mistake to use.SOLUTION: Restraining means for restraining the rotational sliding of the sliding member 2 includes: a storage hole 46 formed on the inner bottom of a bottom wall of a casing body 5; a restraining hole 48 formed at a position corresponding to the storage hole in the sliding member at a stand-by position; a support groove 49 formed at a position corresponding to the restraining hole in a holder member; and a metal ball 47 stored in the buried state in the storage hole. When the casing is inverted at the stand-by position of the sliding member, part of the metal ball is fitted into the support groove astride the restraining hole from the storage hole, and the rotational sliding of the sliding member toward a use position is restrained thereby.