A control method of an electric vehicle provided with: an internal combustion engine ; a generating motor provided so as to be able to generate electricity by receiving motive force from the internal combustion engine ; and a travel motor provided so as to be able to be driven by electric power generated by the generating motor , and the electric vehicle being configured so as to be able to switch a series hybrid mode and an engine direct connected mode, the series hybrid mode being a mode in which, while the internal combustion engine and a drive wheel are linked via a first clutch (c1) so as to be unlinkable/linkable, the travel motor and the drive wheel are linked via a second clutch (c2) different from the first clutch (c1) so as to be unlinkable/linkable, and the travel motor is used as a drive power source such that the electric vehicle travels by transmitting motive force from the travel motor to the drive wheel , the engine direct connected mode being a mode in which at least one of the internal combustion engine and the generating motor is used as a drive power source such that the electric vehicle travels by transmitting motive force from the drive power source to the drive wheel , characterized in that at a mode switching time from the engine direct connected mode to the series hybrid mode involving deceleration, when a rotation synchronization or an engagement of the second clutch (c2) on an engagement side is not completed before a vehicle speed is decelerated to a predetermined vehicle speed, the first clutch (c1) on a disengagement side is disengaged before the engagement of the second clutch (c2) is completed. an internal combustion engine ; a generating motor provided so as to be able to generate electricity by receiving motive force from the internal combustion engine ; and a travel motor provided so as to be able to be driven by electric power generated by the generating motor , and the electric vehicle being configured so as to be able to switch a series hybrid mode and an engine direct connected mode, the series hybrid mode being a mode in which, while the internal combustion engine and a drive wheel are linked via a first clutch (c1) so as to be unlinkable/linkable, the travel motor and the drive wheel are linked via a second clutch (c2) different from the first clutch (c1) so as to be unlinkable/linkable, and the travel motor is used as a drive power source such that the electric vehicle travels by transmitting motive force from the travel motor to the drive wheel , the engine direct connected mode being a mode in which at least one of the internal combustion engine and the generating motor is used as a drive power source such that the electric vehicle travels by transmitting motive force from the drive power source to the drive wheel , characterized in that at a mode switching time from the engine direct connected mode to the series hybrid mode involving deceleration, when a rotation synchronization or an engagement of the second clutch (c2) on an engagement side is not completed before a vehicle speed is decelerated to a predetermined vehicle speed, the first clutch (c1) on a disengagement side is disengaged before the engagement of the second clutch (c2) is completed. <EOS>