The hydro-geological border recharge，runoff and excretion of the confined water in Hua-chi-Luohe formation in the Hetaoyu mine field were analyzed the hydro-geological characteristics of this confined water were studied，and the height of water flowing fractured zone and caving zone caused by coal exploitation were calculated. The results show that the confined aquifer group is with large thickness low cementation，huge hydraulic pressure and special hydro-geological characteris-tics; in some regions where the joints and cracks develop have large amount of water and become the main underground watercourse，which plays an important effect on the well digging and coal resources exploitation becoming the main source of mine water-filled for well construction and coal exploita-tron.