Abstract: With the largest coal seam thickness of 130 m，Laohutai coal mine has 14 large-scale fault zones and mining history more than eighty years in，so the hydrological condition is very complex.The water inrush risk of Laohutai coal mine are analyzed by Midas-GTS software and engineering data，and the detailed analysis on water inrush source and channel is made.The water inrush source includes：aquifer of quaternary alluvium，surface water，water accumulation in movement basin，water in the faults and old mining area; the channel are mainly water flowing fractured zone and activated faults induced by mining.The conclusion is that the current 73003^# and 73004^# working face have high risk of water inrush，which are required to take the necessary measures for continuing mining.

Key words: Superhigh seam, Fully mechanized caving, Water flowing fractured zone, Water inrush risk