Provided is a hydraulic oil control device having a shifting control unit configured to, in a case where, when upshifting is performed, a number of revolutions of an input shaft connected to a to-be-engaged clutch is higher than a number of revolutions of the engine, or a case where, when downshifting is performed, the number of revolutions of the input shaft is lower than the number of revolutions of the engine, supply the to-be-engaged clutch with a hydraulic oil having a pressure equal to or higher than a predetermined standby pressure, and then to supply the to-be-engaged clutch with the hydraulic oil having the standby pressure, and then configured to cause the to-be-engaged clutch to be engaged by supplying the to-be-engaged clutch with the hydraulic oil having a pressure higher than the standby pressure.