A system for regenerating a DPF during operation of an engine-powered forklift that comprises the DPF for collecting particulate matter from exhaust gas discharged from an engine to an exhaust path, the system comprising: an engine control unit for controlling operation of the engine; an electro-hydraulic pump for discharging a working fluid that generates a hydraulic load; a control unit configured to determine a state of the forklift when a DPF regeneration request signal is received from the engine control unit, and controlling at least one of the hydraulic load of the electro-hydraulic pump and revolutions per minute, rpm, of the engine according to the determined state of the forklift; and a diesel oxidation catalyst unit for regenerating the DPF according to the control of the control unit; a transmission control unit configured to control transmission of the forklift; an on-off solenoid valve for controlling whether or not to receive and transmit the hydraulic load of the electro-hydraulic pump; an electronic proportional control valve for controlling an opening ratio according to a control current applied from the control unit; a temperature sensor for measuring a temperature of a portion in front of the diesel oxidation catalyst unit; and a pressure sensor for measuring the hydraulic load generated by the working fluid discharged from the electro-hydraulic pump, characterized in that the control unit is configured to raise the rpm of the engine to a predetermined rpm stored in a memory unit by controlling the transmission control unit in a case where the control unit determines that the forklift is in a stop state, and control the hydraulic load of the electro-hydraulic pump by controlling the on-off solenoid valve in a case that the forklift is in a moving state or an operation state, wherein in a case where it is determined that the state of the forklift is in the moving state or the operation state, the control unit is configured to compare a value of the hydraulic load, generated at the electro-hydraulic pump, measured by the pressure sensor, with a predetermined hydraulic load value, and wherein in a case where the value of the hydraulic load generated at the electro-hydraulic pump is less than the predetermined hydraulic load value, the control unit is configured to turn on the on-off solenoid valve to increase the hydraulic load by applying a load to the electro-hydraulic pump. an engine control unit for controlling operation of the engine; an electro-hydraulic pump for discharging a working fluid that generates a hydraulic load; a control unit configured to determine a state of the forklift when a DPF regeneration request signal is received from the engine control unit, and controlling at least one of the hydraulic load of the electro-hydraulic pump and revolutions per minute, rpm, of the engine according to the determined state of the forklift; and a diesel oxidation catalyst unit for regenerating the DPF according to the control of the control unit; a transmission control unit configured to control transmission of the forklift; an on-off solenoid valve for controlling whether or not to receive and transmit the hydraulic load of the electro-hydraulic pump; an electronic proportional control valve for controlling an opening ratio according to a control current applied from the control unit; a temperature sensor for measuring a temperature of a portion in front of the diesel oxidation catalyst unit; and a pressure sensor for measuring the hydraulic load generated by the working fluid discharged from the electro-hydraulic pump, characterized in that the control unit is configured to raise the rpm of the engine to a predetermined rpm stored in a memory unit by controlling the transmission control unit in a case where the control unit determines that the forklift is in a stop state, and control the hydraulic load of the electro-hydraulic pump by controlling the on-off solenoid valve in a case that the forklift is in a moving state or an operation state, wherein in a case where it is determined that the state of the forklift is in the moving state or the operation state, the control unit is configured to compare a value of the hydraulic load, generated at the electro-hydraulic pump, measured by the pressure sensor, with a predetermined hydraulic load value, and wherein in a case where the value of the hydraulic load generated at the electro-hydraulic pump is less than the predetermined hydraulic load value, the control unit is configured to turn on the on-off solenoid valve to increase the hydraulic load by applying a load to the electro-hydraulic pump.