A movable magnet type pump, wherein a magnet moving body (10) having at least one axially magnetized permanent magnet (27) and an axially extending through liquid passage (3) is arranged so as to be slidable inside a liquid introducing chamber (2); a plurality of coils (11A,11b) are fixed so as to enclose the liquid introducing chamber (2); a first check valve (12) is arranged on a liquid introducing side of the liquid introducing chamber (2); a second check valve (25) is arranged on a liquid discharge side of the through liquid passage (3); and the magnet moving body (10) is caused to reciprocate by interaction between current applied to the respective coils (11A,11B) and magnetic flux from the magnet moving body (10) cutting across the respective coils.