Abstract: Based on analyzing deployment and coverage model of existing WSN node, and in view of disadvantages of difficulty in full coverage, high cost and node redundancy, the paper proposed a scheme of underground WSN coverage model and node deployment with configurable blind area, and introduced its application in mine underground. The deployment scheme of underground WSN node can adjust blind area scale according to actual condition of monitored object and realize blind area setting. The analysis result shows that the scheme covers larger area with the same quantity of nodes as full coverage; in the same monitoring area, the scheme needs less sensor nodes, not only saving system cost but also improving node redundancy problem in certain degree.