Abstarct: Sustainable development causes balance between development and environment and consists of three main aspects including environmental, society and economical factors. All these parameters are related to each other and imbalance in any of them would causes imbalances in other section. Mining activities are one of the most important industries for economical growth and social welfare in many countries. On the other hand, due to the many environmental effects of mining such as water and air pollution, soil erosion, various social and economic problems have led to enter the sustainable development into mining sector. Paying attention to sustainable development in the mining activities can reduce environmental problems and have positive social and economical effects. In modern mining, special attention is paid to sustainable development. Nowadays exploitation and processing minerals are carried out with regard to sustainable development. This led to have more welfare and wealth for industrialized countries. Therefore, with special attention to sustainable development in the mining industries one can enjoy a healthy environment and dynamic economy with social welfare. In order to achieve sustainable development requires taking into account environmental considerations and to reach this goal need to assess environmental effect. By using this method, one can identify the effects of mining activities on the environment and hence perform the necessary precautionary activities. In this study, in order to evaluate the environmental effects of Sangan iron ore mine in Khaf, a matrix structure has been used in which effective factors and environmental components form the dimensions of this matrix. In order to determine the effective factors, environmental components, score of the effective factors and the effect of each effective factor on environmental components, expert’s judgments have been used. By quantification of qualitative comments, the overall effect on each environmental component was determined. The result showed that the percentage of environmental damage for air quality, human health and immunity, underground water and Soil of the area are more than other environmental components. Then, demonstrate the assessment of sustainable development of Sangan iron ore mine in khaf with the use of environmental effects of this mine. The result showed that the mine has a poor stability level and is necessary to predict and carry out required activities baxsed on the percentage of damage of various components.