ABSTRACT: Important part of tourism activities in all of the world is based on nature utility that today is called eco tourism in many parts of the world preservation of ecosystem and natural environment is very important issue in this paper we consider to ecotourism attractiveness and its effect of Mehran province, so information layer contains high level maps, vegetative layer, mineral sources, hydrology, geomorphology, geology and historical attractiveness had been prepared, these layer according to GLS environment had been ranked and recognized by proper level and with of AHP model. Within these layer 3 ecotourism attractiveness part had been recognized that first priority which is most attractive part is for ecotourism development in province, which focus in Kabir Kouh, second priority districts are those with medium attractiveness and located in central and east part of province and third priority is contain those with low attractiveness and contain low level and inferior