An object of the present invention is to provide a powder inhaler that does not require shaking, and that therefore can be operated in an efficient manner.The powder inhaler of the present invention includes: a housing having a port a storage member located in the housing for storing a powder medicament a medicament-delivery member provided in the housing, the medicament-delivery member comprising at least one concave portion for receiving medicament, and capable of taking, relative to the storage member, a receiving position wherein the concave portion receives a predetermined amount of powder medicament from the storage member, and an inhalation position wherein the powder medicament can be inhaled through the admission port a stirring member for stirring the powder medicament stored in the storage member an operation button provided in the housing and being capable of moving between the initial position and a depressed position, while the operation button reciprocates between the initial position and the depressed position, the concave portion in the medicament-delivery member moves from the receiving position to the inhalation position and the stirring member operates.
