This research aims to test and analyze the impact of the process of drying the marshes in the cities of Basra , Amara and Nasiriya on the climate elements (maximum temperature , minimum temperature , average temperature , relative humidity , wind speed , rainfall and atmospheric pressure) statistical analysis using the t-test statistical that based on the Statistical Package (SPSS), by comparing and analyzing the difference between the climate elements averages during the two periods (1981 -1991) and (1992 -2002) , and the impact of that process on the climate elements.The results showed the negative impact of the drying process on climate elements of the three cities cannot be attributed to chance. ‫اخزجبس‬ ‫(د)‬ t -test Keyword : Marshes , Analysis of climate elements ,