The invention discloses an interactive blackboard. The interactive blackboard comprises a blackboard body and an electric control box; a double-opening-shaped fixing frame is arranged at the periphery of the blackboard body, blackboard eraser containing blocks are arranged at the bottom end of the fixing frame, a gear rotation shaft is arranged in the fixing frame, a transmission rod is arranged on one side of the gear rotation shaft, a motor is arranged on one side of the transmission rod, an electromagnetic valve is arranged on the surface of the motor, a transmission gear belt is arranged on the outer side of the gear rotation shaft, a first connecting rod is arranged at one end of the transmission gear belt, and a second connecting rod is arranged at the other end of the transmission gear belt. By arranging microphones, a signal acquiring device, a single chip microcomputer, an output controller and a computer, a voice acquiring module, a voice preceding-stage processing module, a voice training module, a voice recognizing module, a voice prompting module and an output control module can conveniently cooperate with one another to work, and then a teacher can conveniently control rising and falling of blackboard surfaces through voice.