The invention relates to the technical field of teaching appliances, in particular to a blackboard of a multimedia classroom. The blackboard comprises a bottom-layer writing board and a surface-layermoving board. The surface-layer moving board comprises a left moving board and a right moving board. The height of the left moving board and the height of the right moving board are consistent with the height of the bottom-layer writing board. The length sum of the left moving board and the right moving board is equal to the length of the bottom-layer writing board. Sliding rails are arranged at the upper end and the lower end of the bottom-layer writing board. The length of each sliding rail is consistent with that of the bottom-layer writing board. Limiting devices are arranged at the two ends of each sliding rail. Sliding ways cooperating with the sliding rails are arranged at the upper ends and the lower ends of the left moving board and the right moving board. The tail ends of the sliding ways are located at the right end of the left moving board and the left end of the right moving board. A screen box is horizontally arranged over the bottom-layer writing board. According to theblackboard of the multimedia classroom adopting the technical scheme, the blackboard and a projection screen can be utilized at the same time to carry out multimedia teaching.