Abstract: The present invention discloses a method for optimizing sensor network node location in a geological CO2 storage area. In the method, by analyzing data in a monitoring area, such as geological data, geographical data, and meteorological data, analyzing influence factors of a CO2 leakage event and determining a sensitivity partition, designing different coverage control schemes of monitoring sensor network nodes, or intensively or sparsely arranging sensor monitoring nodes, a coverage network is described and optimally expressed on the basis of Delaunay triangulation. In the method for optimizing sensor network node location in a geological carbon dioxide storage area, the arrangement density of wireless sensor network nodes can be dynamically adjusted according to geological and geographical features of a detection area, and the arrangement optimization of a dynamic monitoring sensor network for coal seam carbon dioxide injection area leakage can be realized.