B/S architecture site underground water organic pollution simulation system and online simulation method

The invention relates to a B/S architecture site underground water organic pollution online simulation method. The method comprises the following steps: acquiring a three-dimensional map; a model boundary is selected on the three-dimensional map, encryption points are set for the model boundary, and mesh generation is carried out; basic data are obtained, the basic data comprise pollutant types, leakage conditions, initial conditions and geological conditions, and the basic data are endowed to grid subdivision. According to the method, pollution migration data corresponding to different time points are checked and analyzed in model management by constructing the model, model attribute checking, vertical zooming display, model sectioning, excavation and roaming are carried out, screening analysis and volume calculation on the model attributes are supported, the comprehensive management and decision-making ability of site organic matter pollution is improved, and the method is suitable for popularization and ap