Marine environment protection is an important support for sustainable development of marine ranching. Based on the geographic information system(GIS) and remote sensing(RS), this study developed a 3S system, which integrate Sea surface temperature, chlorophyll concentration, turbidity of sea water and other factors into system. And these factors are important components of marine environment. The system provided data service including loading, browsing, information inquiry, cartography, and also supported the analysis of remote sensing image. In the implementation of the system, the key points of the related technologies have been paid much attention. The practical application shows that it can provide assistance for the environmental protection of marine ranching.