Circulating transportation system and method

The invention discloses a circulating transportation system and method, and relates to the technical field of automobile production equipment.The circulating transportation system comprises a first rail, a second rail, a first driving assembly, a second driving assembly and a circulating moving trolley, the head end of the first rail is provided with a first rail section, the second rail is provided with a first empty section, and the tail end of the second rail is provided with a second rail section; the first track is provided with a second empty section; the first driving assembly and the second driving assembly are arranged close to the first rail section and the second rail section respectively; the circulating moving trolley is suspended on the first track or the second track and is in rolling connection with the first track or the second track; the first driving assembly and the second driving assembly are used for driving the first rail section and the second rail section to slide between the first ra