The invention provides a method for
processing map data based on a mobile terminal, a
system and the mobile terminal. The method comprises the following steps of: carrying out format conversion
processing for the map data and generating map vector data; encoding the generated map vector data and generating the map vector data with a compressed format; constructing a dynamic vector
database in the mobile terminal; downloading the map vector data with the compressed format into the dynamic vector
database; reading the map vector data with the compressed format from the dynamic vector
database and decoding the map vector data with the compressed format to obtain the map vector data; and mapping a map which is corresponding to the map vector data on a display of the mobile terminal according to the map vector data and mobile terminal display pixel data. The method, the
system and the mobile terminal are used to solve the problem that map data storage is matched with display and real
time map scanning, voice navigation, real time geographic information and interest point searching and the like on the mobile terminal are realized in deed.