Consumption of pesticide for the control of plant pests and diseases has been spread from 2500 B.C and over time the use of pesticides has been increased. According to the FAO statistics, the annual average of 1.42 percent of agricultural products in the world is destroyed by pests. In the growing population of the world, pest’s control plays an important role in protection of agricultural products and supply of foods. It is obvious that the pesticides should be used with the right methods, at the right time and with the dose which has been recommended by professionals in order to reduce its adverse effects. In this study, the role of pesticides’ dealers in the central regions of Isfahan province has been studied and the effects of important factors have been analyzed. This research according to its aim is practical, regarding to its nature it’s a reasonable case study and based on evaluation method, it’s an analytical study. In order to assess the validity and reliability of the questionnaire, in the first stage, the pretest was done between 30 units of chemicals dealers and so its validity and reliability was confirmed. After that to gathering required information for this study census and personal refer was collected from 85 units of pesticides sellers which were located in 40 Km around Isfahan. In order to analysis obtained data and information, a single variants, bivariate and multivariate methods has been used also analysis done 17 and Excel 2007 softwares. The results showed that the majority of population in this study was under the age of 61 years old and they had between 1 to 10 years experience. About half of this research’s population had a Bachelor degree and also 60% of these sellers known that announcement of their working hours schedule to farmers were moderate to highly effective. Between the most important factors, the sellers gave the highest point to stability of the place of their shop for their sales and in the other hand in statistic society, one of the most important factors for protection and maintain of chemicals is the lack of sunlight exposure and although the most important factor for sellers’ suggestions about use of pesticide to farmers for control of pest and disease, is the credit of chemicals’ manufacturer. Other factors claimed by sellers were their knowledge about dosage of consumption of pesticides, the confirmation of the effect of advised chemicals to the farmers that was definitely well. Evaluation of scientific data index shows that 62.4% of these dealers have appropriate knowledge; also 94.1% were completely aware about the importance of education. 64.7 % of this studied population considered the Brand issue somehow as an important factor. Also emphasize the public health was an important point for 76.4% of sellers. 73% of them were completely aware about their social roles and 63.5 % have a good management for their stores; also 43.5% of them have an average knowledge about environmental issues. Other results show that there is not any meaningful relation between the age, gender, behavior and experience of these chemical dealers; however there is a meaningful relation between education, scientific data, the use of particular brand of chemicals for selling pesticides, the level of sellers knowledge and adverse effects of pesticides on human health and the environment; and also the believe of chemical dealers about their social roles and behaviors. The results of this study allows that since human effects has been contribute in such research; the training issue, which plays an important social role in various aspects as a requirement, hould be continued for this kashida; TEXT-ALIGN: justify; TEXT-KASHIDA: 0%; TEXT-INDENT: 0in; MARGIN: 0in 0in 0pt; unicode-bidi: embed; DIRECTION: ltr" Keywords: Pesticides, chemical (Pesticides) dealers, role playing, Isfahan province.