Red-blue three-dimensional drawing principle demonstrating device

The invention discloses a red-blue three-dimensional drawing principle demonstrating device, which comprises an introduction label, a drawing frame, a red-blue three-dimensional drawing, a pair of red-blue lens glasses, a glass holder and a vertical plate, wherein the introduction label, the drawing frame and the glass holder are glued on the vertical plate; the red-blue three-dimensional drawing is pressed on the vertical plate by the frame; and the pair of the red-blue lens glasses is placed on the lens holder. The device has the advantages of small volume and obvious effect, and can be suspended on a wall without occupying space. The device is suitable to be widely used for teaching on scientific and extension classes in primary and middle schools.