Abstract: Aiming at the inaccuracy of water inflow prediction in roof aquifer affected by water-flowing fracture zone, through analyzing the change of hydrogeological conditions and groundwater seepage field after extraction, a hydrogeological conceptual model of working face was set up, a model based on the Darcy's law and J.Dupuit formula for prediction of top water-intake inflow in roof aquifer. Through analyzing the mathematical model and application of the model, it was proved that the conceptualization of the model was reasonable and accorded with the hydrogeological conditions during coal mining. It has reference significance for water inflow prediction in roof aquifer affected by water-flowing fracture zone.