A hybrid-type construction machine comprising: a lower running body; an upper turning body mounted on the lower running body through a turning mechanism; a motor generator system connected to an internal combustion engine and performing a motor generator operation, the motor generator system including a first inverter and a motor generator driving by an alternating current by the first inverter; an electric power accumulation system connected to said motor generator system, the electric power accumulation system including an electric power accumulator, a DC bus, and a direct current voltage converter which is disposed between the electric power accumulator and the DC bus; a load drive system connected to said electric power accumulation system and being driven electrically, said load drive system including a second inverter and a turning electric motor contained in the turning mechanism and driven by an alternating current by the second inverter; an abnormality detection part equipped to said motor generator system, said electric power accumulation system and said load drive system; and a main control part determining whether an abnormality has occurred based on a detection value of said abnormality detection part, wherein, when the main control part determines that an abnormality has occurred in one of the motor generator, the electric power accumulation system, and the load drive system,, said main control part stops one of the motor generator, the direct current voltage converter, and the turning electric motor which one is included in said one of the motor generator system, the electric power accumulation system, and the load drive system, and determines to continue or stop a drive of each of the others of the motor generator, the direct current voltage converter, and the turning electric motor which are included in the others of the motor generator, the direct current voltage converter, and the turning electric motor in which the abnormality is not detected, in accordance with said one of the motor generator system, the electric power accumulation system, and the load drive system in which one the abnormality is detected. a lower running body; an upper turning body mounted on the lower running body through a turning mechanism; a motor generator system connected to an internal combustion engine and performing a motor generator operation, the motor generator system including a first inverter and a motor generator driving by an alternating current by the first inverter; an electric power accumulation system connected to said motor generator system, the electric power accumulation system including an electric power accumulator, a DC bus, and a direct current voltage converter which is disposed between the electric power accumulator and the DC bus; a load drive system connected to said electric power accumulation system and being driven electrically, said load drive system including a second inverter and a turning electric motor contained in the turning mechanism and driven by an alternating current by the second inverter; an abnormality detection part equipped to said motor generator system, said electric power accumulation system and said load drive system; and a main control part determining whether an abnormality has occurred based on a detection value of said abnormality detection part, wherein, when the main control part determines that an abnormality has occurred in one of the motor generator, the electric power accumulation system, and the load drive system,, said main control part stops one of the motor generator, the direct current voltage converter, and the turning electric motor which one is included in said one of the motor generator system, the electric power accumulation system, and the load drive system, and determines to continue or stop a drive of each of the others of the motor generator, the direct current voltage converter, and the turning electric motor which are included in the others of the motor generator, the direct current voltage converter, and the turning electric motor in which the abnormality is not detected, in accordance with said one of the motor generator system, the electric power accumulation system, and the load drive system in which one the abnormality is detected.