Establishment of border markets is one of the most well-known methods of economic development of border areas, which has been able to create a dramatic change in production, employment, stabilization of border population, increase in income, and ultimately development and sustainable security in these areas. The present study examines the role of Mahirood border market in the security of Nehbandan border region. This study is of an applied research type and descriptive-analytical. Its statistical population includes all exhibitors, merchants, workers, employees of the private and public sectors in the Mahirood border market, and local trustees of the region (N=100) in 2019, all of whom were questioned. The reliability of the questionnaire was determined with Cronbach's alpha and was estimated to be 0. 88 for the whole questionnaire. Face validity was employed to evaluate the validity of the questionnaire using the opinions of experts. The data were collected and analyzed using SPSS 24 software. According to the findings of the statistical population, Mahirood border market has achieved its goals, which is to achieve border security in Nehbandan region, by 51%, and people believe that the goals of the market have been achieved. These statistics show the positive role of the market in the border area for the people. In other words, all research hypotheses regarding the role of Mahirood border market activity in the realization of border security of Nehbandan region in different dimensions of development and stabilization of residents (82%), reduction of migration (92%) and expansion of regional infrastructure (85%) had a significant effect and have been confirmed. Accordingly, the major policies of the Islamic Republic in the development of border markets have been achieved with the aim of creating sustainable security in border areas, so it is necessary to expand this policy, of course, in accordance with the principle of using local forces and export development in other sectors.