Abstract: The main shaft in the Xinhui Gold Mine area experienced a severe water seepage problem after being put into production, and significant results were achieved by selecting a polymer elastic plugging agent for water plugging construction on the shaft wall. Due to its characteristics of water swelling and rapid gelation, the polymer elastic plugging agent can effectively seal the fissures in the shaft wall and reduce the amount of water seepage. During the construction process, a total of 246 holes were drilled, and 240 kg of polymer material was injected, which decreased the water inflow of the shaft wall from 3.8 m³/h to 0.3 m³/h. The study shows that the material has the advantages of simple construction, long-lasting effects, non-toxicity, and environmental friendliness, which is of great significance for improving the operating environment of the mine, extending the life cycle of equipment, and ensuring safe production. This study provides a practical basis and theoretical support for the promotion and application of the polymer elastic plugging agent in mining enterprises.