In order to improve the mine safety production environment, further improve the mine production capacity and technical level, and strengthen the prevention and control of water disasters, according to the needs of coal mine production construction and safety, the ground-air electromagnetic exploration technology was used to detect the water accumulation in the goaf of the main minable coal seam in No.8 mining area of Shanxi Shouyang Duanwang Coal Industry Group Co., Ltd., with the advantages of high detection efficiency, low cost and sensitive response to good conductive electrolyte. Through the early indoor exploration design, mid-term field data acquisition, post-data processing, result analysis and other processes, the ground-air electromagnetic exploration task was well completed. According to the detection results, a total of 5 suspected goaf water accumulation areas were delineated. After drilling and verifying the two abnormal areas of No.3 and No.4, the results showed that the two abnormal areas were the goaf water accumulation areas of No.8 + 9 coal seam, and the plane projection form and influence range were highly consistent with the delineation of ground detection results. The research results fully demonstrated the feasibility and effectiveness of ground-air electromagnetic exploration technology in the detection of goaf water accumulation area in Duanwang Mine. And ground-air electromagnetic exploration minimized the hydrogeological risks faced in the later excavation and mining process of No.8 mining area, which achieved good economic and technical value.