As the most cutting-edge technology of GIS in recent years, Web GIS (WG) can collect, store, process, analyze and visualize heterogeneous, multi-source, and massive spatial geographic data. Therefore, the introduction of WG technology into MIM to build an information system for massive, multi-source, and heterogeneous MIM can improve the management efficiency of marine resources (MR) for the government and enterprises, and realize the precision, precision, and management of MR. Scientific planning and management are of great significance. The main purpose of this paper is to study the development and utilization of MR based on WG technology. This paper focuses on the analysis of the comprehensive benefits (CB) of marine resource utilization and the evaluation of differences in different regions. This paper analyzes the evaluation principles, and uses the corresponding calculation to compare the different benefits of different regions in my country. The final experiment shows that the CB index of MR is 1.89, 1.68, 1.56 in the high-level area of CB of MR. These areas have large MR, and they are at the forefront of the country in terms of marine aquaculture output value and marine fishing output value per capita marine fishery production value, and the income level of fishermen is also relatively high. The development of MR is a new profitable situation, and the fishery ecological environment has gradually improved. MR The overall level of CBs is high.