Disclosed is a full-automatic teaching blackboard. A mechatronics method is adopted, a main motor drives a chain device to drive the reel type blackboard formed by an elastic steel sheet, and the set motion of the blackboard face of the blackboard is achieved by applying a PLC control device. The full-automatic teaching blackboard comprises a blackboard panel, a support board, an upper reel, a lower reel, the main motor, a chain wheel and chain device, an erasing device, a control panel, a control box and the like. The blackboard panel is supported in a blackboard structure frame through the upper reel and the lower reel. The upper reel and the lower reel are driven by a roller chain wheel and a roller chain which are driven by the main motor. The back of the blackboard panel is supported by the support board. When the main motor drives a driving shaft to rotate, the driving shaft drives a left driving chain wheel and a right driving chain wheel to rotate simultaneously, the driving chain wheels drive an upper driven chain wheel and a lower driven chain wheel to rotate correspondingly at the same speed, so that the upper reel and the lower reel are driven to rotate at the same speed, and the blackboard is driven to move up and down. Through control of the control box, forward rotation, reverse rotation, distance rotation, timing rotation and other functions of the reels of the blackboard can be achieved, and the full-automatic usage requirements are met.