PROBLEM TO BE SOLVED: To provide a storage case which can prevent the offset of particulate and consequently can volatilize a certain quantity of drug ingredients for a long period, as a storage case for storing an inclusion body which encloses particulates impregnated with a normal-temperature volatilizing drug.SOLUTION: A storage case is a roughly rectangular parallelepiped case for storing an inclusion body which encloses particulates impregnated with a normal-temperature drug. It is provided with an insertion port for inserting the inclusion body, at one flank of the case. Inside the storage case, plural pairs of guide members for sandwiching the inclusion body inserted from the insertion port to prevent the offset of the particulates are extended to face each other in the direction of insertion port.