This Study Aims to on the Relationship Between Citizen’s Satisfaction Of the Municipal’s Performance and the Urban Environment’s Sustainability Indexes in District 1 Shiraz. Metodology Of This Study is Descriptive – Survey and the Data are Collected through a questionnaire with a Sample Size of 400 People in District 1 shiraz. The SPSS Software waz Used for Analyse Data .The T-Test Results Show That the Degree of Citizen’s Satisfaction of the Municipal’s Performance is Average to Low. The linear Regression Test Results Showed ,There was a marked Difference Between the Socio- Economic(Matrimony- Income – Education) Status of the Citizen and the amount of their Satisfaction with Municipal’s Performance. The The Kruskal-Wallis Test Results Showed ,There was a significant difference Between Age and Citizen’s Satisfaction, While The Man- Witni Test Showed That There was No significant difference Between Sex and Citizen’s Satisfaction. Finally Pearson Correlation indicates Test that Showed ,There was a Storng and direct relationship between Satisfaction and the Citizen’s Participation .Important Point that Pearson Correlation indicates Test Showed ,There was a Storng and Positive relationship between Satisfaction and Protects the Environmental.