To the problem of how to fully unleash the comprehensive benefits of the Pinglu Canal and achieve sustainable investment and development during the development process, this study is based on the macro perspective of coordinated development of the Canal Economic Belt.Using systems engineering theory and interdisciplinary research methods, the transmission mechanism of the comprehensive benefits of the Canal is sorted out, and the development ideas of the Pinglu Canal Economic Belt are clarified.It is proposed to systematically handle the relationship between comprehensive planning, development entities, cooperation models, and project implementation, forming a reasonable path for internalizing the external benefits of large-scale public welfare infrastructure.On this basis, the paper focuses on the characteristics of different types of project clusters such as transportation infrastructure, comprehensive development of resources, comprehensive land use, and coordinated development of industries.A reasonable and feasible investment and financing model is constructed，and market-oriented profit realization mechanism is explored, ultimately forming a systematic solution to ensure the sustainable development of the Canal Economic Belt.This study can provide a reasonable path for the implementation of Pinglu Canal comprehensive development，and provide reference for promoting the development of similar cross water system connectivity engineering projects.