With the increase of government investment projects, the traditional project management scheme become more difficult in management for administrators. In order to complete the project on schedule, and reduce the management difficulty, project management should be the key research direction of the government. This paper mainly introduces the "government key project online management system" developed by B/S framework. The system mainly provides the functions of project information management,image progress management, project graphics display management, project list management, etc, allowing government to manage the investment projects conveniently and efficiently.