This research aimed to evaluate the exchange rate volatility on financial leverage and profitability of companies listed in the Tehran stock exchange. Therefore, a model was estimated to examine the research objectives using annual data of companies listed in the Tehran stock product in 2015-2020 through panel data Potato is considered the third most critical crop in Iran after wheat and rice. In the last three decades, the area under cultivation of potatoes and production in Iran mainly depended on climatic conditions and various policies. For this reason, the production process has been accompanied by fluctuations. This research has employed an analytical-correlational method that examines the status of potatoes from different aspects, production, consumption, export, price, cultivation status, export target countries, guaranteed price trends, and the relationships between variables. Information from the Ministry of Agriculture- jihad, organizations, and statistical and customs centers reports have been used for data analysis. According to the results, the price fluctuation of this product in 2020 is less than the consumer price index. Moreover, the amount of exports has increased as much as 83% compared to previous years. In 2020, potato production was1148 thousand, and in 2021, 1105 thousand tons of net surplus production is predicted. The study of variable relationships shows a positive and significant relationship between the market price of potatoes and the guaranteed price with the amount of production, producer price index, and the guaranteed price of potatoes. Still, no relationship was observed between the price relationship and exports. تفاصيل المقالة