The flap (20) for the suction operation mechanism (18) of the powder inhaler (1) includes a base member (29), a skirt structure (24) protruding from the surface of the base member (29), and an intake operation mechanism. (18) and a connecting portion (21) to be connected to the elastic member (40 ′).粉末吸入器(1)の吸入作動機構(18)のためのフラップ(20)は、ベース部材(29)と、ベース部材(29)の表面から突出するスカート構造部(24)と、吸入作動機構(18)の弾性部材(40’)に連結されるべき連結部(21)とを含む。