A hydraulic control apparatus for controlling an engagement hydraulic pressure provided to a frictional engagement element that is arranged between a driving source (E; MG) and a driving wheel (RL, RR) and connects/disconnects a torque transmitted between the driving source (E; MG) and the driving wheel (RL, RR) in a vehicle, the hydraulic control apparatus comprising: a target engagement hydraulic pressure calculation section that calculates a target engagement hydraulic pressure of the frictional engagement element; a slip control section that controls the frictional engagement element so that a revolution speed at a driving source side of the frictional engagement element is a higher revolution speed than a revolution speed at a driving wheel side of the frictional engagement element; and a command current output section that outputs a command current to a solenoid valve that controls the engagement hydraulic pressure provided to the frictional engagement element on the basis of a map that has a relationship between the target engagement hydraulic pressure and the command current, characterized by further comprising: a hydraulic pressure decrease section that when a vehicle speed is equal to or less than a predetermined vehicle speed at which the vehicle is judged to be vehicle stop during execution of the slip control, decreases the engagement hydraulic pressure provided to the frictional engagement element; and a correction section that when the hydraulic pressure decrease section decreases the engagement hydraulic pressure, corrects the map so that a variation of the command current with respect to a variation of the target engagement hydraulic pressure is smaller than before the correction. a target engagement hydraulic pressure calculation section that calculates a target engagement hydraulic pressure of the frictional engagement element; a slip control section that controls the frictional engagement element so that a revolution speed at a driving source side of the frictional engagement element is a higher revolution speed than a revolution speed at a driving wheel side of the frictional engagement element; and a command current output section that outputs a command current to a solenoid valve that controls the engagement hydraulic pressure provided to the frictional engagement element on the basis of a map that has a relationship between the target engagement hydraulic pressure and the command current, characterized by further comprising: a hydraulic pressure decrease section that when a vehicle speed is equal to or less than a predetermined vehicle speed at which the vehicle is judged to be vehicle stop during execution of the slip control, decreases the engagement hydraulic pressure provided to the frictional engagement element; and a correction section that when the hydraulic pressure decrease section decreases the engagement hydraulic pressure, corrects the map so that a variation of the command current with respect to a variation of the target engagement hydraulic pressure is smaller than before the correction. a hydraulic pressure decrease section that when a vehicle speed is equal to or less than a predetermined vehicle speed at which the vehicle is judged to be vehicle stop during execution of the slip control, decreases the engagement hydraulic pressure provided to the frictional engagement element; and a correction section that when the hydraulic pressure decrease section decreases the engagement hydraulic pressure, corrects the map so that a variation of the command current with respect to a variation of the target engagement hydraulic pressure is smaller than before the correction.