A control device for an internal combustion engine, - the combustion engine comprising: - an intake passage (51a, 51b); - an exhaust passage (52a, 52b); - an EGR passage connecting the intake passage and the exhaust passage; - a throttle valve provided downstream of a connected part to the EGR passage in the intake passage, and configured to control a quantity of intake air flowing into the internal combustion engine; and - an intake throttle valve provided upstream of the connected part to the EGR passage in the intake passage, - wherein the control device is configured such that: - a target intake air quantity is determined from a revolution speed of the internal combustion engine and a load of the internal combustion engine, and - if the current operating state is determined to be in the EGR region, - an opening degree of the intake throttle valve is controlled according to the target intake air quantity, if the target intake air quantity is equal to or less than a set air quantity, and - the intake throttle valve is fully opened, if the target intake air quantity is not equal to or less than the set air quantity, - wherein the set air quantity is an intake air quantity at which the influence of the pumping loss becomes large and the fresh air introducing quantity is affected when the intake air is throttled by the intake throttle valve. - the combustion engine comprising: - an intake passage (51a, 51b); - an exhaust passage (52a, 52b); - an EGR passage connecting the intake passage and the exhaust passage; - a throttle valve provided downstream of a connected part to the EGR passage in the intake passage, and configured to control a quantity of intake air flowing into the internal combustion engine; and - an intake throttle valve provided upstream of the connected part to the EGR passage in the intake passage, - an intake passage (51a, 51b); - an exhaust passage (52a, 52b); - an EGR passage connecting the intake passage and the exhaust passage; - a throttle valve provided downstream of a connected part to the EGR passage in the intake passage, and configured to control a quantity of intake air flowing into the internal combustion engine; and - an intake throttle valve provided upstream of the connected part to the EGR passage in the intake passage, - wherein the control device is configured such that: - a target intake air quantity is determined from a revolution speed of the internal combustion engine and a load of the internal combustion engine, and - if the current operating state is determined to be in the EGR region, - an opening degree of the intake throttle valve is controlled according to the target intake air quantity, if the target intake air quantity is equal to or less than a set air quantity, and - the intake throttle valve is fully opened, if the target intake air quantity is not equal to or less than the set air quantity, - wherein the set air quantity is an intake air quantity at which the influence of the pumping loss becomes large and the fresh air introducing quantity is affected when the intake air is throttled by the intake throttle valve. - a target intake air quantity is determined from a revolution speed of the internal combustion engine and a load of the internal combustion engine, and - if the current operating state is determined to be in the EGR region, - an opening degree of the intake throttle valve is controlled according to the target intake air quantity, if the target intake air quantity is equal to or less than a set air quantity, and - the intake throttle valve is fully opened, if the target intake air quantity is not equal to or less than the set air quantity, - wherein the set air quantity is an intake air quantity at which the influence of the pumping loss becomes large and the fresh air introducing quantity is affected when the intake air is throttled by the intake throttle valve. - an opening degree of the intake throttle valve is controlled according to the target intake air quantity, if the target intake air quantity is equal to or less than a set air quantity, and - the intake throttle valve is fully opened, if the target intake air quantity is not equal to or less than the set air quantity, - wherein the set air quantity is an intake air quantity at which the influence of the pumping loss becomes large and the fresh air introducing quantity is affected when the intake air is throttled by the intake throttle valve.