To provide a pump which prevents the complication of an internal structure and manufacturing process and the enlargement of a body size, and which can determine pump service life.

The pump 1 consists of a rotor 3 equipped with a magnet 31, an impeller 5 fixed to one end in an axial direction of a rotary shaft 12 of the rotor 3, a stator 2 equipped with teeth having a coil wound therearound and a circuit part 4 equipped with a control part 41 for performing energization control of the stator 2. While a magnetic force detection part 6 for detecting magnetic force of the rotor 3 is provided to a side of an end of the magnet 31 in an axial direction of the rotary shaft 12 in the rotor 3, a determination part 43 for determining whether or not the pump reaches service life from detected information from the magnetic force detection part 6 is provided to the circuit part 4. By so doing, the determination of pump service life can easily be made with a simple structure. As a result, the complication of the manufacturing process and internal structure and the enlargement of a body size can be suppressed.