A vehicle gear-shifting control apparatus for a vehicle, comprising: an engine which is configured to generate a travel drive force of the vehicle; a motor which is configured to generate a drive force of the vehicle and which is configured to supply a battery with regenerative energy during deceleration of the vehicle; a hydraulically controlled automatic transmission which has an input shaft connected to the engine and the motor and an output shaft connected to a rear wheel of the vehicle and which is configured to subject an input rotation to gear-shifting or speed-changing at a transmission gear ratio corresponding to a selected shift stage and is configured to output a rotation; and a controller which is configured to execute, at least during deceleration of the vehicle, regeneration control of imparting a regenerative braking torque to the rear wheel by causing the motor to perform a regeneration operation and gear-shifting control of changing the shift stage by outputting a gear-shifting signal in accordance with a rotation speed of the input shaft to the automatic transmission, wherein the controller is configured to start the gear-shifting control, triggered by the rotation speed of the input shaft dropping to a predetermined shift-down point at an occasion of a shift-down of the shift stage, and during deceleration of the vehicle when it is determined that a road surface μ of a road surface on which the vehicle travels is lower than a predetermined threshold in the regeneration control, the controller is configured to set the shift-down point lower than during deceleration of the vehicle when it is determined that the road surface μ is equal to or higher than the threshold. an engine which is configured to generate a travel drive force of the vehicle; a motor which is configured to generate a drive force of the vehicle and which is configured to supply a battery with regenerative energy during deceleration of the vehicle; a hydraulically controlled automatic transmission which has an input shaft connected to the engine and the motor and an output shaft connected to a rear wheel of the vehicle and which is configured to subject an input rotation to gear-shifting or speed-changing at a transmission gear ratio corresponding to a selected shift stage and is configured to output a rotation; and a controller which is configured to execute, at least during deceleration of the vehicle, regeneration control of imparting a regenerative braking torque to the rear wheel by causing the motor to perform a regeneration operation and gear-shifting control of changing the shift stage by outputting a gear-shifting signal in accordance with a rotation speed of the input shaft to the automatic transmission, wherein the controller is configured to start the gear-shifting control, triggered by the rotation speed of the input shaft dropping to a predetermined shift-down point at an occasion of a shift-down of the shift stage, and during deceleration of the vehicle when it is determined that a road surface μ of a road surface on which the vehicle travels is lower than a predetermined threshold in the regeneration control, the controller is configured to set the shift-down point lower than during deceleration of the vehicle when it is determined that the road surface μ is equal to or higher than the threshold.