Introduction and Objective: One of the management's issues that are more interest for scientist is optimize human resource management which plays key role of organization's efficiency and one aspect of the optimization human resource management is job satisfaction. The purpose of this research is instrument designing to job satisfaction measurement of stuff by appropriative questioner which consider especial circumstance of Ahwaz municipality worker, then identify and analyze the influence factor on determinate job satisfaction.Methods: In this study to obtain the appropriative questionnaire immoderate and intricate of valid questionnaires were used. So at first, to identify involved factors in explaining the job satisfaction Principal Component analysis were used and the result showed: Support, Justice, Stewardship, nature of work and employment facilities are effective component. After this step, by Stepwise Regression the role of each those components in job satisfaction were predicted. In order to discover job satisfaction diversification between different occupational groups, depend on the require test, analysis of variance, T test were used.Results: Results were showed significant difference between different age group and job experience with Job satisfaction and there were no significant difference in educational level with Job satisfaction. According to the result, work environment and ergonomic, providing credit facility for employer, the manager's attendance to meritocracy and training course were offered.