The invention relates to a demonstration device for the working principle of a parachute. Including base, circular groove, LED light strip, fan, horizontal circular hole, speed control knob, vertical circular hole, electric control board, DC power supply, cylindrical glass container, parachute model, counterweight, Supporting feet; the base is cylindrical, and a circular groove is designed on the edge of the upper panel for placing a cylindrical glass container. The fan is connected to the electric control board through wires, and the electric control board is connected to the fan switch and DC through wires. Power supply, the umbrella surface of the parachute model is made of thin plastic cloth, which is connected to the counterweight below by the umbrella line. The beneficial effects of the present invention are as follows: turn on the fan switch, adjust the speed control knob, demonstrate that the wind force increases, the parachute model rises, and finally hangs in the air; it can also demonstrate that the weight of the counterweight decreases, and the parachute model rises; and finally reaches a stable equilibrium state ; It can also demonstrate that the height of the parachute model is different at different wind speeds.