The utility model discloses a baffle-type blackboard eraser. The baffle-type blackboard eraser comprises a frame, wherein the frame is provided with fixing screws, a blackboard is arranged in the frame, the blackboard is provided with water spray holes, the frame is provided with micro motors, and the micro motors are connected with brushes. The baffle-type blackboard eraser disclosed by the utility model is fully-automatic, and the installation number and the installation angle of the brushes can be determined according to the length of the blackboard; a teaching platform is provided with related buttons which are used for controlling the micro motors, and thus contents which are not needed to be erased can be prevented from being erased; and in addition, the baffle-type blackboard eraser is also provided with an independent remote controller, the blackboard can be erased in a remote control way by a teacher during a walking process of the teacher, the teacher has no need to walk back to the blackboard, and thus a lot of trouble can be reduced. The baffle-type blackboard eraser disclosed by the utility model is divided into two types, i.e. one type is suitable for a whiteboard, and brushes of the baffle-type blackboard eraser in the type can adopt common cottons; the other type is suitable for the blackboard, brushes of the baffle-type blackboard eraser in the type can adopt materials as like automobile baffle brushes, and the brushes can be thicker; and therefore, convenience is provided for the teacher to erase the blackboard, and toxic dust pollution can also be prevented.