“隋氏作之虽劳,后代实受其利”,隋是个短促的朝代,运河开通后不久便告灭亡。于是大运河对继隋而起的唐王朝起了重大作用,成了唐王朝的经济命脉。运河一旦出了问题,唐王朝也就危在旦夕。因此,大运河的畅通滞塞直接关系到唐王朝的兴盛衰败。唐代运河的变迁是反映唐代兴衰的一个重要侧面。本文力图从唐代对漕运的改革入手,来阐述其发展过程。 “Although Sui did his work, his descendants benefited from it,” Sui was a short dynasty, and the canal died shortly after its opening. Therefore, the Grand Canal played a significant role in the Tang dynasty following Sui Dynasty and became the economic lifeline of the Tang Dynasty. Once the canal is out of the question, the Tang dynasty is at stake. Therefore, the smooth flow of the Grand Canal is directly related to the prosperity and decline of the Tang Dynasty. The changes of the canal in the Tang Dynasty is an important aspect reflecting the rise and fall of the Tang Dynasty. This article tries hard to start with the reform of water transport in the Tang Dynasty to explain its development process.