Design Pattern for Regional Electronic Map Project

There existed different understanding for information flow between developers’ and users’view in regional electronic map project. This paper puts forward adopting design pattern to realize effective accumulation and successful reusing for project practical experiences, analyzes basic principles and its contents. Based on a great deal of practice, a task-based project implementation pattern is proposed and designed. The idea facilitates new developers comprehending the design pattern and making a more useful choice, and provides an operational solution.