A control device for a hybrid vehicle, said hybrid vehicle including an internal combustion engine generating vehicle driving force, a power storage device capable of being charged and discharged, an electric motor receiving supply of electric power from said power storage device for generating vehicle driving force, and a catalyst device purifying exhaust gas of said internal combustion engine by catalysis, said control device comprising: a running mode control unit controlling switching of a running mode including a first mode (CD mode) in which the vehicle is made to run without maintaining a state of charge, the SOC being indicative of a charge state of said power storage device, and wherein the electric power stored in the power storage device is basically used as the energy source for running the vehicle, and a second mode (CS mode) in which said internal combustion engine is operated as necessary and electric power is generated by a second electric motor for maintaining said state of charge at a predetermined target, and characterized in that said control device further comprises: a discharge allowable power control unit configured to increase, from a non-increased state, when said running mode is at said first mode and said internal combustion engine is stopped, a discharge allowable power that can be discharged by said power storage device to greater than when said running mode is at said first mode and said internal combustion engine is operating, or than when said running mode is at said second mode, wherein even when the running mode is at the first mode and the engine is running, or when the running mode is at the second running mode, discharge allowable power control unit is configured to increase discharge allowable power to greater than the non-increased state, during warm-up of the catalyst device; when the catalyst device is not currently warmed up and the running mode is at the first mode and the engine is stopped, discharge allowable power control unit increases discharge allowable power to a predetermined discharge allowable power greater than the non-increased state; and when startup of said internal combustion engine is required to begin warm-up of the catalyst device when said running mode is at said first mode and said internal combustion engine is stopped, said discharge allowable power control unit maintaining said discharge allowable power at a value corresponding to the discharge allowable power when said running mode is at said first mode and said internal combustion engine is stopped and not returning said discharge allowable power to the non-increased state, and returning said discharge allowable power to the non-increased state after warm-up of said catalyst device ends. a running mode control unit controlling switching of a running mode including a first mode (CD mode) in which the vehicle is made to run without maintaining a state of charge, the SOC being indicative of a charge state of said power storage device, and wherein the electric power stored in the power storage device is basically used as the energy source for running the vehicle, and a second mode (CS mode) in which said internal combustion engine is operated as necessary and electric power is generated by a second electric motor for maintaining said state of charge at a predetermined target, and characterized in that said control device further comprises: a first mode (CD mode) in which the vehicle is made to run without maintaining a state of charge, the SOC being indicative of a charge state of said power storage device, and wherein the electric power stored in the power storage device is basically used as the energy source for running the vehicle, and a second mode (CS mode) in which said internal combustion engine is operated as necessary and electric power is generated by a second electric motor for maintaining said state of charge at a predetermined target, and characterized in that said control device further comprises: a discharge allowable power control unit configured to increase, from a non-increased state, when said running mode is at said first mode and said internal combustion engine is stopped, a discharge allowable power that can be discharged by said power storage device to greater than when said running mode is at said first mode and said internal combustion engine is operating, or than when said running mode is at said second mode, wherein even when the running mode is at the first mode and the engine is running, or when the running mode is at the second running mode, discharge allowable power control unit is configured to increase discharge allowable power to greater than the non-increased state, during warm-up of the catalyst device; when the catalyst device is not currently warmed up and the running mode is at the first mode and the engine is stopped, discharge allowable power control unit increases discharge allowable power to a predetermined discharge allowable power greater than the non-increased state; and when startup of said internal combustion engine is required to begin warm-up of the catalyst device when said running mode is at said first mode and said internal combustion engine is stopped, said discharge allowable power control unit maintaining said discharge allowable power at a value corresponding to the discharge allowable power when said running mode is at said first mode and said internal combustion engine is stopped and not returning said discharge allowable power to the non-increased state, and returning said discharge allowable power to the non-increased state after warm-up of said catalyst device ends.