Paying attention to happiness and its effective dimensions has a fundamental role in the desirability and environmental qualities of living and residential areas of cities, which today, not paying attention to it, is one of the challenges facing city dwellers. The current research is conducted with the aim of analyzing the factors affecting the realization of the happy city and explaining the pattern of achieving it in the city of Rudehen. This research is quantitative in nature. Data collection has been achieved through a questionnaire. In the descriptive part of the data analysis, the situation of the statistical sample of the research is examined, that is, the range of Rudehen, and in the quantitative evaluation part, the covariance-based structural equation modeling approach was used to test the research assumptions. In this research, it has been tried to evaluate 5 assumptions, i.e. the impact of social-cultural, physical, economic-household, administrative-administrative and finally ecological-environmental factors. The findings of the research indicate that the average level of happiness in the city of Rudehen is average. contract. And the average of the investigated influencing variables in environmental and social components are 3.16 and 3.12, respectively, which is a little higher than the average, but in managerial, physical and economic variables with an average of 2.31 and 2.48., 2.92 have the lowest average level compared to other indicators. These components show that by improving the condition of each of the 5 effective assumptions, the level of happiness increases and decreases by weakening each.