The paper explains the function mechanism of green supply chain，analyzes the important significance of carrying forward the mechanism of green supply chain in the Yangtze River Delta，including improving the awareness of green development of industrial clusters in the Yangtze River Delta，effectively promoting the process of pollution prevention and control，and helping the adjustment of industrial economic structure. thepapaer provides 3 different cases of the government，automobile industry and industrial park to emerge the practice and inspiration of carrying out green supply chain project. And the paper presents three bottleneck problems and breakthrough suggestions for promoting green supply chain in Yangtze River Delta.