Real-time screen management is an important function of the special realtime parent system the authors set forth independently and dived into during the"Seventh Five-Year" period.As an ingenious real-time multi-window system,it provides such mechanisms as virtual display,virtual keyboard and virtual terminal,which are widely used in various special real-time systems,especially in real-time monitor and control systems.In the paper,several problems about its design and implementation have been dealt with.