The invention discloses a double power type curtain machine. The double power type curtain machine comprises a main crossbeam, a transmission cable, an electric traction wheel set, a manual traction wheel set, a motor, a hand wheel and two sliders and is characterized in that a first lateral wheel is arranged at one end of the main crossbeam, a second lateral wheel is arranged at the other end ofthe main crossbeam, the main crossbeam is provided with two telescopic shear arms, the sliders are arranged at one ends of the corresponding telescopic shear arms, and the sliders are slidably connected with the main crossbeam and connected with the transmission cable. The double power type curtain machine has the advantages that the curtain machine is reasonable in structural layout, capable of driving a curtain to unfold or fold, capable of working normally under an energized condition, capable of driving the curtain to move during power loss and beneficial to maintenance; the unfolding or folding of the curtain is achieved through the telescopic shear arms, the curtain is reasonable in deformation during the unfolding and folding process, and excessive local wrinkling can be avoided; the curtain machine has a power loss switching function, and the problem that the whole machine is heavy and needs large external force during manual control can be avoided.