The objective of this research is to study of the volatility trend of inflation uncertainty in Iran from the first quarter of 2011 to fourth quarter of 2023. To quantitative volatility of inflation uncertainty, EGARCH method is used. The results indicate that inflation uncertainty has always experienced an increasing and decreasing trend between first quarter of 2011 and the forth quarter of 2023; so that among the inflation uncertainty that occurred during the research period, inflation uncertainty in the second quarter of 2014 and inflation uncertainty in the second quarter of 2017 had the highest value, respectively.