The invention relates to a copper oxide drying device, which belongs to the technical field of copper oxide processing equipment, and comprises a drying box, a drive rolling wheel, a driven rolling wheel, a feeding belt and a motor. A feed inlet and a discharge hole are formed in the drying box; the drive rolling wheel is located beside the feed inlet; the driven rolling wheel is located beside the discharge hole; the feeding belt is connected between the drive rolling wheel and the driven rolling wheel, and penetrates through the drying box through the feed inlet and the discharge hole; the motor is in transmission connection with the drive rolling wheel through a speed reducing mechanism; a heating wire is arranged in the drying box through a first installation support, is in a coil shape, and is located right above the feeding belt; a second installation support is further arranged in the drying box and is provided with a fan; and the fan is located right above the heating wire. Thecopper oxide drying device provided by the invention is simple and reasonable in structure, convenient to feed and discharge, fast to dry, higher in work efficiency, and lower in processing cost.