Teaching demonstration device

A teaching demonstration device comprising a frame; an upper reel and a lower reel horizontally and rotatably arranged inside the fame to support a hanging curtain; a reel drive unit connected with the upper and lower reels separately and fixed on the frame; a driving control unit connected with the reel drive unit; and a frame direction adjusting unit arranged on the bottom of the frame. A teacher can write extracurricular contents on a curtain tool, such as a hanging curtain, when he is off work, fix the hanging curtain between the upper and lower reels in the class, and control the operating mode of the reel drive unit through the driving control unit to realize upward or downward rolling of the hanging curtain, thereby realizing demonstration of teaching contents to save the time for writing on blackboard in class, increase the extracurricular teaching content and improve teaching quality.