Based on the basic principles of GIS, the author realized one-dimensional human-computer interactive leveling software for the FAEM data processing through layered graphics, dynamic display, grid-based retrieval, object-oriented, visual development technology, etc. The software has some unique advantage in the high degree of visual, user-friendly interface, easy and simple operation and so on. It could improve the efficiency of data processing and the quality of observed data. It has high practical value. In this paper, the author described the functional requirements, the design thought, and some key technologies of the software, and introduced a practical application.