Introduction: The city of sardasht, located in north western part of Iran was the target of a chemical invasion in 1988.Many studies have shown the veteran’s adverse condition of physical and medical health which can affect the quality of their lives .So far, few studies have been devoted to the Iranian chemical veteran’s quality of life .This research was studying the chemical veteran’s quality of life 15 years after exposure mustard gas.Methods: In a cross-sectional observation 163 chemical veterans of sardasht were randomly selected among all the veterans of sardasht .their quality of life were studied via Wisconsin’s quality of life questionnaire. demographic and the infection datas of the veterans were listed in order to analyse statistically, tables of frequency and relative frequency were used .For analytical understanding of the datas several tests such as k square test were used. P