Today, the quality and quantity of urban spaces has become one of the most important developmental indicators in the cities. The management of citizenship relations and increase of social interactions level and presence of people in urban spaces have been considered as the backbone and capital of a dynamic and vibrant community. The purpose of this study was to determine and evaluate the effective indicators on promoting social interactions in urban spaces with a happy city approach. Sampling method was determined by multi-stage comparative stratified sampling and the number of samples was determined by using Cochran formula about 384 people in Qaemshahr. Data collection tool was a research hypothesis questionnaire. Descriptive statistics were used to describe the data. Inferential statistics were used to analyze the hypotheses by SPSS and LISREL software. Four effective factors for promoting social interactions were extracted. These factors are as follows: the first priority is the sense of belonging to the place (5.10), the second priority is security (3.95), the third priority is the urban pedestrian (3.67) and the fourth priority was urban furniture (3.60). The results show that all the components affect the promotion of social interactions in the city's public spaces.
