Abstract: The paper centers around the hardware structure, software design phylosophy of Z-80 E for actual use in pump station real time control system and their experiement result. The system's main functions are: complete cyclical monitoring of various parameters in respect to analog, pulse, status, alarm, etc.; complete the key-board control programme (including a pump station diagram display); complete the station control protection and printing programme. Also related are the 4 -stage break-off in the system design and their respective functions. Experiments have proved the anti-interference measures adopted in the system is feasible, which will make the system stable and reliable. The system, simple as it is in structure, is powerful in performance, flexible in operation and easy in maintenance, and will also be used in the future as a far-away terminal of the computer network system for cross-country pipelines.