To solve the problem of human-computer nature interaction (HCNI), real-time plotting and generating three-dimensional situation of battlefield in three-dimensional electronic sand table, established a new flat using navy three-dimensional plotting using augmented reality technology. Describe the key technology of augmented reality three-dimensional modeling, use example to carry out three-dimensional loading and dramatizing of virtual army forces and virtual landscape and interspaces location and three-dimensional navy plotting. The simulation result shows, comparing with the traditional two-dimensional plotting, the three-dimensional plotting method is more flexible, natural and intuitive, and the AR-based space is more immersive and thinking.