The invention discloses a multifunctional teaching demonstration device and a teaching method thereof, and relates to the field of teaching devices.The multifunctional teaching demonstration device comprises a base, white boards, a linkage mechanism, a cleaning mechanism and a positioning mechanism, a rotating frame is rotationally arranged at the top end of the base, the white boards are symmetrically arranged in the rotating frame in a sliding mode, and the linkage mechanism is arranged in the rotating frame; the cleaning mechanisms are symmetrically arranged on the outer wall of the rotating frame, and the positioning mechanism is arranged in the rotating frame. The arrangement mode that the white boards, the linkage mechanism, the cleaning mechanism and the positioning mechanism are matched is utilized, the two white boards are arranged on the rotating frame, when one white board is lifted for use through the linkage mechanism, the other white board is descended to be stored in the rotating frame, and when frequent writing is needed, the white boards can be cleaned by removing positioning of the cleaning mechanism; and the full writing drops and is erased by the cleaning mechanism, so that the trouble of manually erasing by frequently using an eraser is avoided, the time and the physical power are saved, and the working efficiency is improved.