Top spin is a kind of circular motion equipment which move around the horizontal axis. It has a large capacity of 20 people, and passengers sit on the cockpits back to back. When the equipment works,the powerful arms will rotate circuitously and the rides will also move continuously with the cockpits. The high-speed rotation and the weightlessness will make the riders feel as if being pushed into the mysterious space. This first class and innovative design is in line with human modern psychology and stimulate demand of entertainment.