Aiming at the problems of inconsistency objectives of smart monitoring platform construction, prohibitive amount of platforms and insufficient data integration and sharing, starting with the governance goal of the Yangtze River protection, based on the characteristics of the Yangtze River node cities and previous research, by integrating the technologies of Smart Water CIBMA (cloud platforms, internet of things, big data, mobile internet, artificial intelligence), the architecture of “3+2+2+4” Yangtze River Protection Ecological Could Platform is designed, consisting of “three 1s” (“one network”, “one picture”, “one cloud”), “2 centers”(big data resource center, intelligent operation center), “2 systems”(technical standard system, institutional guarantee system) and “4 platforms”(industrial ecological platform, project scheduling management platform, business application platform, and intelligent operation platform), which realizes the standardizing of the data monitoring and application management of the ecological environment in the Yangtze River Basin, establishing a unified full-cycle technical standard system, breaking information barriers, and improving the level of intelligent management.