Abstarct: Streets are one of the most prominent and important public spaces in today's cities. The reluctance to attend and interact with the streets is clearly related to the low quality level and the lack of proper design baxsed on the wishes and needs of the citizens, and the need to solve this problem is obvious in all city streets. The experience of the quarantine period as well as the observance of social distancing were among the things that caused a rethinking of how to shape the streets in line with the new conditions, for this purpose, the purpose of this research is to improve the flexibility and vitality of urban public spaces with the aim of increasing social sustainability in the era The outbreak is a pandemic. Also, the sampling method in this research consists of two parts, in the first part, approximately eleven people were selected for making the test for each item. Then, according to GPOWER software, statistical regression method, at the error level of 0.01%, six predictive factors, test power of 99%, 147 people were selected. However, due to the fact that the testing method had a larger volume (308 people), it was used as a sample and criterion, and a questionnaire was distributed among this number of citizens. Data analysis was done through correlation and regression, structural equations in Lizrel, Spss software. The results of the research showed that Ahmedabad street has almost average conditions with the score of social stability (2.97) and flexibility (2.95); And with the vitality score (2.36), it is not lively. The results show that by strengthening and improving the index of vitality and flexibility, the public space will come out of the silent state and a socially stable space can be achieved.