A method for manufacturing a centrifugal pump of the present invention comprises a housing (2) having a lid member (22) and a bottom member (21), a rotating body (3) rotatably housed in the housing (2) (1) for manufacturing a centrifugal pump (1) comprising a support mechanism (4) for supporting the bottom member (3), assembling the bottom member (21) and the lid member (22) And a joining step of joining the lid member (22) and the bottom member (21) while applying pressure in a direction in which the bottom member (21) and the lid member (22) approach each other in an assembled state doing.本発明の遠心ポンプの製造方法は、蓋部材(22)および底部材(21)を有するハウジング(2)と、ハウジング(2)内に回転可能に収納された回転体(3)と、回転体(3)を支持する支持機構(4)と、を備える遠心ポンプ(1)を製造する方法であり、底部材(21)と蓋部材(22)とを組立てて組立状態とする組立工程と、組立状態で、底部材(21)と蓋部材(22)とが互いに接近する方向に加圧を行いつつ、蓋部材(22)と底部材(21)との接合を行う接合工程と、を有している。
