Abstract: In order to have the safety partition to the coal mining in a seam under unconsolidated aquifer, based on the GIS, the safety evaluation method of the Co al mining in the seam under the unconsolidated aquifer was applied to study the major influence factors of the coal mining under the unconsolidated aquifer in No.6 Sou th Mining Block of a coal mine.With the statistics on the mining block information with the similar engineering geological conditions, the mathematical method of the entr opy method was applied to determine the weight of each factor.The GIS multi element information space analysis technology was applied to the partition of the feasibilit y for the safety mining of No.6 South Mining Block.The results showed that No.01 coal mining face in the safety mineable area of area I in No.6 South Mining Block co . uld have a safety mining.ln the actual mining process, the roof of the coal mining face was normally fallen, the water inrush from the roof of the coal mining face was 06 m3/h generally and there was no water inrush or quicksand accident occurred.