This study aims to investigate the effect of Quality of Social Relationships on Social Welfare and Urban Community Quality of Life, using the Structural Equation Modeling (SEM) quantitative analysis method with the SMARTPLS tool. This research method involves collecting data from 600 samples representing various backgrounds and characteristics of individuals in an urban environment. The results showed that Quality of Social Relationships has a positive and significant influence on Social Welfare and Urban Community Quality of Life. The quality of strong and supportive social relationships is shown to play an important role in enhancing individual social welfare and improving the overall quality of life in urban communities. From the analysis using the SEM method with SMARTPLS, the findings suggest that social interaction, life satisfaction, social support, and the ability to adapt to environmental changes contribute positively to the quality of social relationships which in turn influence Social Welfare and Urban Community Quality of Life. The implication of these findings is the need to consider the importance of strengthening the quality of social relationships in developing social policies and programs aimed at improving social welfare and quality of life in urban environments.