In a control device of a hybrid vehicle provided with an engine and a propulsion motor, at least one of which is used for driving the hybrid vehicle and a high voltage battery which power is charged and discharged by driving or regeneration operation of a propulsion motor, the control device comprises a throttle opening control device which controls an opening of a throttle depending on an accelerator pedal operating amount, and when the current driving speed of the vehicle at zero, and either the temperature of the high voltage battery is lower than a specified value, or the internal resistance of the high voltage battery is greater than a specified value, or an increase in a rotation speed of the propulsion motor or the rotation speed of the engine 3 is greater than a specified value, or a change amount of the input/output power voltage of the high voltage battery is greater than a specified value, or a change amount of the accelerator pedal operating amount is greater than a specified value, delays the response characteristic of the throttle opening with respect to the accelerator pedal operating amount more than for a standard control, and also performs control in which the upper limit value thereof is limited.