Thin aquifers in strong runoff areas were potential dangers of coal mining, with high water richness, large flow rates, and fast flow rates, which brought great difficulties to grouting. Sunzhuang Mine 12661 working face was taken as an example, the research on grouting treatment technology for thin aquifers in strong runoff areas was carried out. For the safe mining of the working face, reinforcement and intermittent grouting should be taken during grouting.