Weather radar echoes need to be fused with geographic information to locate radar echoes and guide meteorological services. The Radar Operational Software Engineering (ROSE) has designed a new open map format and adopted one document with national map data to dynamically match radar stations. This method improves the inconvenience that the Principal User Processor (PUP) system needs each site to apply for customized maps in the existing radar service system. The ROSE product display subsystem supports the map adaptive display of various weather radars and their data under different earth projection modes. The design pattern is introduced into the program design of the map application submodule, which effectively solves the problem of display efficiency of refined map data and realizes the balance between display information and efficiency.