Abstract: Introduction In order to further improve the quality and efficiency of distribution network operation and maintenance, support the transformation of distribution network technology to digitalization, lean and intelligent transformation. Method On the basis of a large number of distribution substation problems analysis and Latest monitoring technology research, this paper put forward the architecture of smart distribution system, and the design scheme of the system platform and hardware facilities, and focusing on the functional modules of environment, security, video and equipment status, the key technical routes of smart distribution substation were emphatically analyzed. This work provided some guidance for further study on building intelligent, visualized, automated and interactive modern smart distribution substation. Result A new type of modern distribution substation with intellectualization, visualization, automation and interaction has been established. and establishes a new type of modern distribution substation with intellectualization, visualization, automation and interaction. Conclusion The results of this paper are applied in a large number of smart distribution substation construction, which provides a very important guiding role for the standardized construction of smart distribution substation in China.