Abstract: Based on qualitative and quantitative analyzing geological conditions of fully mechanized mining,the mode of evaluation of geological conditions of fully mechanized was established in order to select suitable site,and the general frame and data flow of the evaluation were designed.The index of evaluation of geological conditions of fully mechanized mining were designed.And the methods of index quantification were studied,the multilevel fuzzy synthetic model for evaluation of geological conditions of fully mechanized mining was established.On the basis of GIS,the system for evaluation of geological conditions of fully mechanized mining and selection of the optimum mining technology had been developed base on MapX.The system is composed of two parts: editing subsystem and evaluating subsystem,which can provide such functions as vector and attribute data input,edit,process,inquire,statistical analysis,spatial analysis,single factor and comprehensive evaluation,visualization in scientific computing and output.etc.Based on the graphic and attribute data input,the evaluation and mining tech-nology choosing were carried on quickly and dynamically.The system was applied in Liuqiao No.2 coal mine,the area of fully mechanized mining was defined,the values of degree of optimality of every evaluation area were provided,and the mining technologies were offered for different district,the optimum development scheduling was set down.