A hybrid vehicle provided with: a drive control device and a differential device (14, 16; 14, 16') which includes a first differential mechanism and a second differential mechanism (16; 16') and which has four rotary elements (C1, C2/S1/S2/R1, R2; C1, R2'/S1/S2'/R1, C2'); and an engine, a first electric motor, a second electric motor and an output rotary member which are respectively connected to said four rotary elements, and wherein one (C1, C2; C1, R2') of said four rotary elements is constituted by a rotary component (C1; C1) of said first differential mechanism and a rotary component (C2; R2') of said second differential mechanism which are selectively connected to each other through a clutch, and one (C2; R2') of the rotary components of said first and second differential mechanisms which are selectively connected to each other through said clutch is selectively fixed to a stationary member through a brake, the drive control device comprising: an electric motor operation control portion configured to control said first and second electric motors (MG1, MG2) to generate reaction torques in a drive mode of the hybrid vehicle in which said engine is operated in an engaged state of said clutch and in a released state of said brake; characterized by a torque assignment ratio control portion configured to control a ratio of the reaction torques to be generated by said first and second electric motors (MG1, MG2), without a change of a drive force for driving the hybrid vehicle, wherein said first differential mechanism is provided with a first rotary element connected to said first electric motor, a second rotary element connected to said engine, and a third rotary element connected to said output rotary member, while said second differential mechanism (16; 16') is provided with a first rotary element (S2; S2') connected to said second electric motor, a second rotary element (C2; C2'), and a third rotary element (R2; R2'), one of the second and third rotary elements of the second differential mechanism being connected to the third rotary element of said first differential mechanism, and said clutch is configured to selectively connect the second rotary element of said first differential mechanism, and the other of the second and third rotary elements (C2; C2', and R2; R2') of said second differential mechanism (16; 16') which is not connected to the third rotary element of said first differential mechanism, to each other, while said brake is configured to selectively fix the other of the second and third rotary elements of said second differential mechanism which is not connected to the third rotary element of said first differential mechanism, to the stationary member. an electric motor operation control portion configured to control said first and second electric motors (MG1, MG2) to generate reaction torques in a drive mode of the hybrid vehicle in which said engine is operated in an engaged state of said clutch and in a released state of said brake; characterized by a torque assignment ratio control portion configured to control a ratio of the reaction torques to be generated by said first and second electric motors (MG1, MG2), without a change of a drive force for driving the hybrid vehicle, wherein said first differential mechanism is provided with a first rotary element connected to said first electric motor, a second rotary element connected to said engine, and a third rotary element connected to said output rotary member, while said second differential mechanism (16; 16') is provided with a first rotary element (S2; S2') connected to said second electric motor, a second rotary element (C2; C2'), and a third rotary element (R2; R2'), one of the second and third rotary elements of the second differential mechanism being connected to the third rotary element of said first differential mechanism, and said clutch is configured to selectively connect the second rotary element of said first differential mechanism, and the other of the second and third rotary elements (C2; C2', and R2; R2') of said second differential mechanism (16; 16') which is not connected to the third rotary element of said first differential mechanism, to each other, while said brake is configured to selectively fix the other of the second and third rotary elements of said second differential mechanism which is not connected to the third rotary element of said first differential mechanism, to the stationary member.