At an electric pump, a first gasket is interposed between a stator and a motor housing, and a supporting member, and a second gasket is interposed between the supporting member and a substrate housing. Further, the electric pump has a first snap-fit structure that assembles the stator to the supporting member, a second snap-fit structure that assembles the motor housing the supporting member, and a third snap-fit structure that assembles the substrate housing to the supporting member.