An idling-stop cancellation control apparatus of a vehicle driving system of an automotive vehicle capable of running by a power produced by an engine and transmitted via a transmission whose shift is controlled by a hydraulic pressure produced by an engine-driven oil pump during operation of the engine, comprising: an idling-stop control device configured to execute idling-stop operation by which the engine is automatically stopped when a first predetermined condition is satisfied under a state where a stop of the vehicle has been decided, and also configured to inhibit the idling-stop operation to restart the engine when the first predetermined condition becomes unsatisfied, the idling-stop control device comprising: a first idling-stop cancellation control section (S17, S16; S21-S24, S16) configured to execute idling-stop cancellation control by which the vehicle driving system is put into a state suited for vehicle-driving operation when a second predetermined condition is satisfied, a decision on whether the second predetermined condition is satisfied being made based on at least a speed (Ne) of the engine, wherein the first idling-stop cancellation control section (S17, S16; S21-S24, S16) configured to execute, based on the engine speed (Ne), idling-stop cancellation control by which the vehicle driving system is put into an output torque state suited for vehicle-driving operation, when a hydraulic pressure sensor system provided for detecting a hydraulic pressure (Pc) is failed; and configured to execute, based on the hydraulic pressure (Pc), idling-stop cancellation control by which the vehicle driving system is put into an output torque state suited for vehicle-driving operation, when the hydraulic pressure sensor system is unfailed. an idling-stop control device configured to execute idling-stop operation by which the engine is automatically stopped when a first predetermined condition is satisfied under a state where a stop of the vehicle has been decided, and also configured to inhibit the idling-stop operation to restart the engine when the first predetermined condition becomes unsatisfied, the idling-stop control device comprising: a first idling-stop cancellation control section (S17, S16; S21-S24, S16) configured to execute idling-stop cancellation control by which the vehicle driving system is put into a state suited for vehicle-driving operation when a second predetermined condition is satisfied, a decision on whether the second predetermined condition is satisfied being made based on at least a speed (Ne) of the engine, wherein the first idling-stop cancellation control section (S17, S16; S21-S24, S16) configured to execute, based on the engine speed (Ne), idling-stop cancellation control by which the vehicle driving system is put into an output torque state suited for vehicle-driving operation, when a hydraulic pressure sensor system provided for detecting a hydraulic pressure (Pc) is failed; and configured to execute, based on the hydraulic pressure (Pc), idling-stop cancellation control by which the vehicle driving system is put into an output torque state suited for vehicle-driving operation, when the hydraulic pressure sensor system is unfailed. a first idling-stop cancellation control section (S17, S16; S21-S24, S16) configured to execute idling-stop cancellation control by which the vehicle driving system is put into a state suited for vehicle-driving operation when a second predetermined condition is satisfied, a decision on whether the second predetermined condition is satisfied being made based on at least a speed (Ne) of the engine, wherein the first idling-stop cancellation control section (S17, S16; S21-S24, S16) configured to execute, based on the engine speed (Ne), idling-stop cancellation control by which the vehicle driving system is put into an output torque state suited for vehicle-driving operation, when a hydraulic pressure sensor system provided for detecting a hydraulic pressure (Pc) is failed; and configured to execute, based on the hydraulic pressure (Pc), idling-stop cancellation control by which the vehicle driving system is put into an output torque state suited for vehicle-driving operation, when the hydraulic pressure sensor system is unfailed.