The present invention provides a vehicle locking clutch control device for inhibiting the separation deviation of the locking clutch caused by impact independent of vehicle deceleration states so as to improve running performance. Because an initial separation pressure setting unit (108) sets initial separation pressure PLUF according to the inertia moment outputted from an engine (12) as decelerating, and the separation pressure gets smaller with the increasing of the inertia moment, it can inhibit deviation of the locking clutch (26) as separating even though the necessary torque capacities of the locking clutch (26) are different because of different inertia moments of the engine caused by different deceleration states, so as to inhibit the separation deviation of the locking clutch (26) caused by the impact because of gear ratio setting before the vehicle stops, thus properly improving the running performance, where the PLUF is a set hydraulic pressure in the transition of switching the locking clutch (26) from engaging state to disengaging state by a locking-separating unit (104) as decelerating.