In accordance with industrialized societies, in many developing countries the density of primary and secondary dopants have increased in atmosphere and this task has became the question of air pollution to a growing hocus pocus. Nowadays, the development of industrial activities and propagation of their dopants have transformed to an important problem for people and environment. In addition to contaminations which are entering to air through combustion (of fuels) to preparation of energy for industry , evacuate of offal and presumably poison into air by different industries have large portion in increasing the air pollution of assemblies particularly in industrial centers. Among the most important necessity of implementation of this project is the place of residential areas and populations that is near to the factory and the effects that the dopants of the factory activities put on regional human. Also the existence of arboretum, woodlands of pistachio, and almond in this region are increasing the necessity of environmental studies. Software of AERMOD is one of the confirmation ’ s software of EPA that is locating in the category of preferred model. In this research, transmittance of nitrogen oxide gases, sulfur dioxide and levitative in gradient from chimniesof Khatunabad copper smelting plant have simulated with use of AERMOD View software in an areas with a radius of 25 Km. In this study, simulation was done for the interval of 1 hour, 3 hour, 8hour, 24 hour, monthly and yearly. Simulated densities has compared with the standards of environment organization. The results show that the maximum of simulated density for sulfur dioxide and Particulate Matter (PM 10 ) is existed in all intervals greater than standard and predicted densities for nitrogen oxide in available standards. Key words Air pollution modeling, AERMOD, SO 2 , NO X , Particulate Matter