The purpose of this paper was analyzing and predicting of affected indicators to process stability in the tourism industry of Iran. In this regard, according to studies and surveys of leading experts, main indicators of sustainable tourism field to six aspects of economic, social, cultural, ecological, political and technological categories. The main research question was that from experts' opinion, which indicators aspect has main priorities of assessment of sustainability to Iran tourism industry? And which indicators aspect can better predict of sustainability in process of Iran tourism industry? Accordingly, the aim of this research was applied research and its methodology was descriptive –analysis. For collecting of necessary data to the weighting of indicators for data analysis by Delphi survey method we used 15 expert opinions. In order to analyze data and answer the research questions we used fuzzy Delphi analytical hierarchy process method and discriminant analysis in SPSS software. The results indicated that the political dimension of Iran tourism industry sustainability indicators from experts' opinion was greater priority to pay it in order to sustain this field, and cultural dimensions of sustainability indicators for tourism industry had a major role in forecasting in tourism industry sustainability of Iran.