Abstract: Strong interactive features, flexible mapping process, complex and diverse data, and wide audiences for online dynamic maps,This paper designs an online dynamic map service architecture based on WebGL technology.This architecture defines the online map data model for massive vector data, defines the storage structure of the online map slice, and makes full use of the computer hardware acceleration capability to achieve rapid visualization and dynamic update of massive vector slice data.To test the feasibility of the method, this framework was used to develop a “multi-information geographic information service platform” in a county, The results show that the framework improves the practicality and operability of the online dynamic map platform and provides reliable theoretical and technical support for online dynamic map services.

Key words: online dynamic map, vector tile, WebGL, dynamic update