A driving-device-integral-type rotary electric machine comprising: a rotary electric machine having a stator core inserted to a frame, and a driving device for driving the rotary electric machine by supplying power, which are integrally fixed; wherein the driving device includes a first inverter and a second inverter, which are configured to supply power to stator windings (5a, 5b) of the rotary electric machine, and the first inverter and the second inverter are installed and arranged on a heat sink, in a state where the inverters (27a, 27b) are linearly symmetrical with respect to an axis of the rotary electric machine in an axial direction, the first inverter and the second inverter contacting with a first protrusion and a second protrusion formed on the heat sink, and the heat sink is configured in such a way that at least a heat capacity of a portion with respect to the first inverter is roughly equal to a heat capacity of a portion with respect to the second inverter, characterised in that the heat sink being arranged between the driving device and the rotary electric machine, an aperture of the frame is linked to one end portion of the heat sink, wherein a thermal-conductive passage, which is extended from the first inverter through the heat sink, and a thermal-conductive passage, which is extended from the second inverter through the heat sink, are linearly symmetrical with respect to the axis of the rotary electric machine in the axial direction, and the thermal-conductive passages are roughly parallel to a direction where the axis is extended, wherein a rear holder is inserted to the aperture of the frame, and a rear bearing box installing a rear bearing, by which one end portion of the rotor is supported, is formed at a central portion of the rear bearing, the rear holder being arranged between the heat sink and the rotary electric machine. a rotary electric machine having a stator core inserted to a frame, and a driving device for driving the rotary electric machine by supplying power, which are integrally fixed; wherein the driving device includes a first inverter and a second inverter, which are configured to supply power to stator windings (5a, 5b) of the rotary electric machine, and the first inverter and the second inverter are installed and arranged on a heat sink, in a state where the inverters (27a, 27b) are linearly symmetrical with respect to an axis of the rotary electric machine in an axial direction, the first inverter and the second inverter contacting with a first protrusion and a second protrusion formed on the heat sink, and the heat sink is configured in such a way that at least a heat capacity of a portion with respect to the first inverter is roughly equal to a heat capacity of a portion with respect to the second inverter, characterised in that the heat sink being arranged between the driving device and the rotary electric machine, an aperture of the frame is linked to one end portion of the heat sink, wherein a thermal-conductive passage, which is extended from the first inverter through the heat sink, and a thermal-conductive passage, which is extended from the second inverter through the heat sink, are linearly symmetrical with respect to the axis of the rotary electric machine in the axial direction, and the thermal-conductive passages are roughly parallel to a direction where the axis is extended, wherein a rear holder is inserted to the aperture of the frame, and a rear bearing box installing a rear bearing, by which one end portion of the rotor is supported, is formed at a central portion of the rear bearing, the rear holder being arranged between the heat sink and the rotary electric machine.