The invention provides a wind-light-hydrogen-electricity energy conversion demonstration system, including a wind energy generation unit, a solar energy generation unit, an electrolytic hydrogen production unit, a metal hydride hydrogen storage unit, a fuel cell and a load. After the wind energy and solar power generation units generate power, through the electrolytic hydrogen production unit, the power is converted into hydrogen energy, the metal hydride hydrogen storage unit stores hydrogen, and according to the need, the fuel cell hydrogen is supplied with hydrogen to carry out power generation and also can serve as a storage unit, so that long-term lossless storage and long-distance transport of hydrogen energy is achieved. The system directly and vividly shows the conversion among wind energy, solar energy, hydrogen energy and electric energy, and realizes the interconnection and energy storage of renewable clean energy through energy conversion. The demonstrate system can be used for teaching demonstration and student experiments, which is of great significance to improve classroom fun and students' enthusiasm and improve students' awareness of renewable energy efficient use, conversion, energy storage and energy saving.