In recent decades, free zones have been proposed as an effective lever for the growth and improvement of countries' economies. These zones can play an irreplaceable role in this direction as one of the axes of attracting capital. Identifying opportunities and threats to attract capital in free zones, Removing barriers, creating and providing a suitable platform for attracting domestic and foreign investors, are effective factors in investing in free zones, which in turn lead to economic growth and development of these areas. Considering the significant effects of free zones on the welfare of residents in these areas, the purpose of this study was to investigate the effect of effective factors of domestic and foreign investment in the Arvand Free Zone on economic welfare indicators (per capita income, unemployment rate and inflation) in Khuzestan province. During the period 1385-1396, which at first, while obtaining the opinions of 40 managers, experts and residents of the region in order to formulate appropriate strategies and strategies to achieve the goals of creating the region based on the potential and advantages for domestic and foreign investment, using From the technique (SWOT), we identify the factors affecting the indoor and outdoor environment in order to discover the strengths and weaknesses (internal factors) and threats and opportunities (external factors) and then using the model method to explain with a break Extensive (ARDL) The effect of domestic and foreign investment in the region on welfare indicators in Khuzestan province is examined. The results of this study in the first part of the analysis (SWOT), show that the most important opportunities in the development of free trade zone based on maximum investment attraction, respectively, the strategic geographical location of the Arvand Free Zone and the use of regional markets. The results of this study in the second part showed that according to the current conditions of the domestic investment region, it has had stronger effects on welfare indicators than foreign investment.