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Paying attention to improving the quality of sidewalks increases the presence of citizens and ultimately the vitality of the space. The present study was conducted with the aim of factors affecting the vitality of Shahriar sidewalk in Tabriz. This research is descriptive-analytical. Sidewalk vitality variables were identified and researched from texts, related studies and experts' opinions in the form of a questionnaire and with the approval of relevant experts, it was designed as a Likert scale (five-choice) and completed by 303 sidewalk users.Data were analyzed using SPSS and LISREL software. The results of confirmatory factor analysis (SEM) showed that among the 27 variables affecting the vitality of the sidewalk, three factors: 1- economic-social 2- physical-environmental 3- accessibility-location can be extracted and have appropriate fitting indices. . Based on the results of correlation (covariance) between the obtained factors, our positive correlation was between 0.51 to 0.86 (P <0.01). Internal stability using Cronbach's alpha coefficient for each factor was 0.73, 0.93 and 0.74, respectively. Based on the results of Friedman test, the highest average averages were obtained, respectively physical-environmental, access-spatial and economic-social.