Abstract: Analyzing and studying the water yield properties of bedrock aquifer is the basis for preventing and controlling water in the coal mine. The paper takes the first area of Jinjitan Coal Mine in northern Shaanxi Province as the research object, main control factors affecting the aquifer of roof bedrock aquifer is analyzed, which contains bedrock thickness, lithology coefficient, core adoption rate, permeability coefficient and specific capacity. Mathematical evaluation model of multi-element information and water yield property evaluation map of coal seam roof bedrock aquifer water yield properties are established. Water yield property of study area is classified into 5 types, which shows an increased trend from east to west. Water yield property of study area is moderate to strong in the whole.