Abstract: In the coal mine water disaster control work, due to the misunderstanding of some key concepts used in mine water control and protection, there was no uniform technical standards in the aspects of mine hydrogeological condition exploration, mine water disaster characteristic analysis diagnosis, mine water inflow foreca st and mine water disaster control technical plan formulation and so on, and the efficiency of water control was low.The correlation and essential differences between mi ne hydrogeology and hydrogeology, mine water inflow and water resources, drainage volume, mine excavation project and water disaster control project were analyzed emphatically, key problems that should be paid attention to in mine hydrogeological condition exploration, mine water disaster characteristic diagnosis analysis and min e water inflow prediction, etc., were also proposed in the paper. The connection and coordination of mine excavation and water preventing projects were proposed.