Today, with the development of cities and the introduction of the principle of sustainable development, environmental issues and, green cities have been the focus of urban planners. The issues and problems that exist especially in the cities indicate the failure to achieve the characteristics of sustainability in them, while the spatial and ecological analysis of the environment has been one of the main characteristics of sustainability in the urban regions and districts, and it is trying to improve the urban environment. Provide suitable for the residents of the cities. The green city is one of the new approaches arising from the concepts of sustainable development, which can be used to improve the quality of the environment and sustainable urban development. The purpose of this research is to investigate the metropolis of Isfahan in terms of green city indicators to find out what is the state of this city in terms of the green city approach, and then with a look at Freiburg, Germany, which is a successful example of a green city in the world and adopted sister. Isfahan is known to implement strategies. Therefore, this research with  the  descriptive-analytical method and library and field method with the help of  a questionnaire firstly first collected the necessary information and then with the help of SPSS software it came to the conclusion concluded that according to the people, the energy index is the most important index for Reaching the green city is in Isfahan, while with the help of SWOT technique, urban professionals consider environmental governance to be the most important component to reach the green city.