The present study was conducted using a descriptive-analytical method based on review sources, field visits, semi-structured questionnaires, interviews, and expert opinion (Delphi) to extract and refine the indicators. In the quantitative phase, questionnaires were developed based on Likert and after refinement, the results were analyzed using linear or non-parametric tests, using the Kolmogorov-Smirnov (K-S) test to rank the indicators. This indicated that the quality of decision-making in this test was significant. The statistical population for interviews with experts was 15 people and the quantitative part with a questionnaire was 54 people. Finally, by combining these two sets of findings, the final model of the individual-social components of the quality of life in the public space of Tajrish Square was extracted and practical suggestions were presented for improving urban development indicators, which showed that from the perspective of space users, "access to public transportation", "sense of belonging to the place", "environmental quality of commercial space" and "perception of social security" have a higher rank among the influential indicators. Finally, the final conceptual model of the research provided an analytical framework for measuring and improving the quality of life in public spaces with similar trans-regional functions.