An exhaust gas recirculation device (10, 11, 12), comprising: - an exhaust gas recirculation passage which is configured to circulate a portion of exhaust gas of an internal combustion engine from an exhaust passage downstream of a turbine of a turbo supercharger along an exhaust flow to an intake passage upstream of a compressor of the turbo supercharger along an intake flow, and - a recirculation control valve which is configured to adjust an amount of exhaust gas circulated to the intake passage, and - an exhaust gas recirculation control device configured to set a target recirculation ratio such that: - a curve connecting engine operating points having equal target recirculation ratios matches an equal intake air amount curve achieved by connecting engine operating points with equal intake air amounts of the internal combustion engine, and - the smaller the intake air amount of the internal combustion engine the lower the target recirculation ratio, wherein the recirculation control valve is configured to be controlled in position according to the target recirculation ratio, characterized in that the exhaust gas recirculation control device is further configured to set a target recirculation ratio based on a target EGR ratio map, (i) wherein the operating region of the underlying internal combustion engine is divided into a high target recirculation ratio region, a middle target recirculation ratio region, and a low target recirculation ratio region and according to the underlying amount of intake air, (ii) wherein each of the high, middle and low target recirculation regions (C, B, A) has a uniform target EGR ratio within each of the regions (C, B, A), and (iii) wherein a larger target EGR ratio is set for a region (C, B, A) which has a larger amount of intake air, such that the target EGR ratio is changed in a stepwise manner per predetermined range of amount of intake air. - an exhaust gas recirculation passage which is configured to circulate a portion of exhaust gas of an internal combustion engine from an exhaust passage downstream of a turbine of a turbo supercharger along an exhaust flow to an intake passage upstream of a compressor of the turbo supercharger along an intake flow, and - a recirculation control valve which is configured to adjust an amount of exhaust gas circulated to the intake passage, and - an exhaust gas recirculation control device configured to set a target recirculation ratio such that: - a curve connecting engine operating points having equal target recirculation ratios matches an equal intake air amount curve achieved by connecting engine operating points with equal intake air amounts of the internal combustion engine, and - the smaller the intake air amount of the internal combustion engine the lower the target recirculation ratio, wherein the recirculation control valve is configured to be controlled in position according to the target recirculation ratio, characterized in that the exhaust gas recirculation control device is further configured to set a target recirculation ratio based on a target EGR ratio map, (i) wherein the operating region of the underlying internal combustion engine is divided into a high target recirculation ratio region, a middle target recirculation ratio region, and a low target recirculation ratio region and according to the underlying amount of intake air, (ii) wherein each of the high, middle and low target recirculation regions (C, B, A) has a uniform target EGR ratio within each of the regions (C, B, A), and (iii) wherein a larger target EGR ratio is set for a region (C, B, A) which has a larger amount of intake air, such that the target EGR ratio is changed in a stepwise manner per predetermined range of amount of intake air. - a curve connecting engine operating points having equal target recirculation ratios matches an equal intake air amount curve achieved by connecting engine operating points with equal intake air amounts of the internal combustion engine, and - the smaller the intake air amount of the internal combustion engine the lower the target recirculation ratio, (i) wherein the operating region of the underlying internal combustion engine is divided into a high target recirculation ratio region, a middle target recirculation ratio region, and a low target recirculation ratio region and according to the underlying amount of intake air, (ii) wherein each of the high, middle and low target recirculation regions (C, B, A) has a uniform target EGR ratio within each of the regions (C, B, A), and (iii) wherein a larger target EGR ratio is set for a region (C, B, A) which has a larger amount of intake air, such that the target EGR ratio is changed in a stepwise manner per predetermined range of amount of intake air.