According to the needs of Liaoning province marine economic operation monitoring and evaluation system for capacity building in this paper, it proposes the concept of marine economy operation monitoring and evaluation system, and introduces the system construction content and its architecture, and discusses the key issues on the monitoring index system, evaluation index system, mechanism construction and system implementation. It will help to improve the Liaoning marine economic statistical informatization level and promote the innovation of marine economy in Liaoning, and expect to provide reference for the system construction of other coastal provinces' provincial marine economy operation monitoring and evaluation system.