An electric pump comprising an integral combination of a brushless electric motor and a liquid pump rotatably driven by the electric motor, wherein the electric motor comprises a motor case, a motor drive shaft that is arranged in a case internal space formed inside the motor case and that is rotatably supported by the motor case, a rotor disposed on the motor drive shaft, and a stator that is positioned inside the case internal space so as to surround and oppose the rotor from the outward circumferential direction and that is mounted on the motor case; electric power application control means is provided for controlling application of electric power to the stator and performing control for rotatably driving the motor drive shaft via the rotor; and the electric power application control means is provided with: a normal control mode for controlling application of electric power to the stator such that the motor drive shaft rotates in accordance with an externally inputted rotation command; and a heat generation control mode for controlling application of electric power to the stator such that the stator generates heat at a higher heating efficiency than the heating efficiency of the stator when the application of electric power is controlled in the normal mode, characterised in that the electric pump is provided with a rotational speed detector (44, 45) for detecting the rotational speed of the electric motor; the electric power application control means being furthermore provided with a startup control mode for performing control that applies power to the stator in a predetermined power application pattern, and causing the rotor to be placed in a state of rotation that allows power application control using the normal control mode; and the electric power application control means controlling the application of power to the stator using the heat generation control mode when the rotational speed of the rotor as detected by the rotational speed detector (44, 45) is less than a predetermined rotational speed when power application control has been performed using the startup control mode. a normal control mode for controlling application of electric power to the stator such that the motor drive shaft rotates in accordance with an externally inputted rotation command; and a heat generation control mode for controlling application of electric power to the stator such that the stator generates heat at a higher heating efficiency than the heating efficiency of the stator when the application of electric power is controlled in the normal mode, characterised in that the electric pump is provided with a rotational speed detector (44, 45) for detecting the rotational speed of the electric motor; the electric power application control means being furthermore provided with a startup control mode for performing control that applies power to the stator in a predetermined power application pattern, and causing the rotor to be placed in a state of rotation that allows power application control using the normal control mode; and the electric power application control means controlling the application of power to the stator using the heat generation control mode when the rotational speed of the rotor as detected by the rotational speed detector (44, 45) is less than a predetermined rotational speed when power application control has been performed using the startup control mode.