Abstract: Based on the analysis of the current situation of the existing mobile terminals and the variety of internal factors of progressive transmission of spatial vector information, we determined to change the hierarchical progressive transmission method of vector maps into the sub-regional progressive transmission method to solve the problem that the browse effects of large data sets are not very desirable. We adopted the sub-regional compression method to transmit, keeping the original dimension data in the center area and showing the compress data in others. We adopted the next generation network graphic standards SVG, combined with the Java Web, HTML5 technologies to implement progressive transmission system, and carried out a plenty of related experiments. These experiments show that the scheme is of feasibility and effectiveness in dealing with the transmission of large data sets on mobile terminals and improvement of the user experiences.

Key words: progressive transmission, mobile terminal, vector, SVG, compression