It is an astronomical demonstration teaching tool that uses a precise gear and motor system to fully demonstrate the entire process of the Earth's revolution around the Sun, the Earth's rotation, and the Moon's revolution around the Earth within 20-60 minutes, while maintaining a constant angle between the Earth's equatorial plane and ecliptic plane, thus presenting the true changes in seasons, lunar phases, and tidal moments. The Earth's revolution, rotation, and lunar revolution periods are strictly designed according to actual proportions. The base is equipped with a date/hour dial, which can intuitively read corresponding astronomical phenomena. It integrates sundials and tidal scales, making it easy to explain the relationship between sunlight and tides.