Recent years,Pinglu Canal is put into construction,and the preliminary research on Hunan-Guangxi Canal and Jiangxi-Guangdong Canal is orderly promoted.The development of super large canals is attracted high attention.We take comprehensive benefits of the development of super large canals as the entry point,analyze the overall planning and the characteristics of super large canals.Then taking into account various factors such as national strategic requirements,economic development characteristics and industry development orientation in the new development stage,we propose that comprehensive benefits of super large canal development should focus on four aspects based on diversified value theory and public project economic evaluation methods,such as the value to national strategic implementation,the value of reducing social logistics costs,the value of comprehensive utilization of water resources,and the value of leading comprehensive development along canals,optimizing regional economic development and national spatial pattern.Taking Pinglu Canal as an example,we conduct empirical analysis to provide support for the construction of comprehensive benefit evaluation method system for the development of super large canals in the new development stage.