Provided is a control device which can drive an engine at an engine rotation speed which can realize a comfortable riding feeling and can match an actual vehicle speed with a target vehicle speed in a vehicle speed control mode. A target engine rotation speed calculation unit (12) calculates a target engine rotation speed. A target transmission ratio calculation unit (13) calculates a target transmission ratio of the continuously variable transmission (5) on the basis of the target engine rotation speed. A target drive force calculation unit (15) calculates a target value related to drive force of the vehicle on the basis of an accelerator operation amount detected by a sensor and the target engine rotation speed. A target throttle opening calculation unit (16) calculates a target throttle opening on the basis of the target value related to drive force of the vehicle and the target engine rotation speed so that a drive force corresponding to the target value can be obtained in a case where the normal traveling mode is selected. The target throttle opening calculation unit (16) calculates a target throttle opening so that the actual vehicle speed matches a target vehicle speed in a case where the vehicle speed control mode is selected.