Abstarct: Introduction: In recent years, with the advancement of science and technology, there were optimistic assumptions to solve all the problems of humanity. However, the advancements and technologies of non-renewable resources have had adverse effects on the life cycle and the earth through the emergence of problems such as global warming, increased environmental pollution, increased pollution, increased population, etc. Also, in urban society in the contemporary era, due to the accelerated and rapid growth of cities, many problems have been created, which has caused numerous urbanization problems in all dimensions, economic, physical, and especially in the social sphere. Accordingly, one of the goals of urban designers and experts in the contemporary era is to improve the quality of sustainability in cities, especially at the level of neighborhoods, which are known as the vital cells that constitute cities.Also, one of the most important components of neighborhoods and cities is introduced as alleys. In the past urban planning, compared to the contemporary era, alleys were not just a place for access, but played an important role in achieving sustainability. Alleys, as a space and place for gaining shared experiences and social interactions, have a significant impact on neighborhood sustainability. According to the investigation and documentation collected in the present study, one of the most important goals is to recognize and identify the key sustainability criteria in order to achieve a sustainable neighborhood through the role and position of alleys. Materials and Methods: The research method is applied in terms of purpose and descxriptive-analytical and case study research. Considering the subject and need of the research, three neighborhoods in Shahrizd, such as Fahadan, Safaiyeh, and Imamshahr, which are different from each other in terms of physical, form, and space, are selected and studied.The collected data is analyzed using two advanced methods such as fuzzy Delphi and SPSS. Results and findings: In order to identify the sustainability index criteria and the importance and weight of each criterion in each neighborhood, a questionnaire was designed and prepared separately. Through this questionnaire, the opinions of experts and residents were collected in the form of data and finally analyzed and examined using the fuzzy Delphi technique and SPSS software. As a result, according to the investigations carried out using two research methods and the collected documents, the final result of identifying the index criteria in the form of 3 main criteria with weights (0.76, 0.700, and 0.690) and 4 important criteria with weights (0.693, 4.00, 4.04, and 0.750) in the sustainability of the neighborhood is introduced and discussed through the role and position of the alley.