A regeneration control device for vehicle including: a generator to be driven by an engine, and a transmission capable of continuously varying a speed ratio, and configured to convert kinetic energy of a vehicle into electrical energy by the generator, comprising: a generated voltage control unit configured to variably control a generated voltage of the generator; and a road traffic environment detection unit configured to detect a road traffic environment; characterized by a recommended deceleration calculation unit configured to calculate a recommended deceleration during coasting depending on the road traffic environment; and a regeneration control unit configured to convert the kinetic energy of the vehicle into the electrical energy by increasing the generated voltage of the generator as the recommended deceleration increases; wherein the regeneration control unit operates a load respond control for gradually increasing the generated voltage of the generator when an engine rotation speed is not higher than a predetermined rotation speed if the recommended deceleration is not larger than a normal permissible deceleration normally permitted during coasting and maintains the engine rotation speed at a rotation speed higher than the predetermined rotation speed by increasing the speed ratio of the transmission so that the load respond control function does not operate when the recommended deceleration is larger than the normal permissible deceleration. a generator to be driven by an engine, and a transmission capable of continuously varying a speed ratio, and configured to convert kinetic energy of a vehicle into electrical energy by the generator, comprising: a generated voltage control unit configured to variably control a generated voltage of the generator; and a road traffic environment detection unit configured to detect a road traffic environment; characterized by a recommended deceleration calculation unit configured to calculate a recommended deceleration during coasting depending on the road traffic environment; and a regeneration control unit configured to convert the kinetic energy of the vehicle into the electrical energy by increasing the generated voltage of the generator as the recommended deceleration increases; wherein the regeneration control unit operates a load respond control for gradually increasing the generated voltage of the generator when an engine rotation speed is not higher than a predetermined rotation speed if the recommended deceleration is not larger than a normal permissible deceleration normally permitted during coasting and maintains the engine rotation speed at a rotation speed higher than the predetermined rotation speed by increasing the speed ratio of the transmission so that the load respond control function does not operate when the recommended deceleration is larger than the normal permissible deceleration. a generated voltage control unit configured to variably control a generated voltage of the generator; and a road traffic environment detection unit configured to detect a road traffic environment; characterized by a recommended deceleration calculation unit configured to calculate a recommended deceleration during coasting depending on the road traffic environment; and a regeneration control unit configured to convert the kinetic energy of the vehicle into the electrical energy by increasing the generated voltage of the generator as the recommended deceleration increases; wherein the regeneration control unit operates a load respond control for gradually increasing the generated voltage of the generator when an engine rotation speed is not higher than a predetermined rotation speed if the recommended deceleration is not larger than a normal permissible deceleration normally permitted during coasting and maintains the engine rotation speed at a rotation speed higher than the predetermined rotation speed by increasing the speed ratio of the transmission so that the load respond control function does not operate when the recommended deceleration is larger than the normal permissible deceleration.