Most of the research on the coverage of existing equipment area aims at two-dimensional undirected sensing area. The location of equipment is often set randomly. The coverage of complex space environment is low, which is difficult to meet the needs of practical applications such as safety monitoring. The study puts forward the algorithm of adjusting the direction of the equipment in combination with the virtual force and the regional weight in the three-dimensional space region, increasing the effective coverage of the area, and finally giving the deployment of the additional equipment based on the greedy strategy to further enhance regional coverage. The experimental results show that the proposed scheme can greatly improve the regional coverage at a small cost.