Abstract: Based on the data of actual observations, the paper discussed the changes of hydraulic characteristics in the Red beds and the effect of mining disturbance on water inflow in coal mines. Under mining disturbance, fractures are rapidly developed vertically in the Red beds, forming passages for water to discharge into mines. Then, fractures Red beds are compacted due to the gravity of overlying strata, blocking water inflow from the Red beds to mines. Horizontally, mining disturbance produces a limited influence in the Red beds.