This study investigates the relationships between smart city construction, technology acceptance, and resident well-being, integrating the Technology Acceptance Model with smart city research. Using structural equation modeling and data from 2,187 residents across five smart cities, we examine how smart city initiatives influence technology acceptance and, consequently, resident well-being. Results indicate that smart city construction positively affects perceived usefulness and ease of use of smart technologies, which in turn drive technology acceptance. Technology acceptance significantly mediates the relationship between smart city initiatives and resident well-being, highlighting its crucial role in translating urban innovations into quality of life improvements. The indirect effect of smart city construction on resident well-being through technology acceptance was significant (β = 0.183, p < 0.001), accounting for 37.1% of the total effect. Additionally, a direct positive effect of smart city construction on well-being was observed (β = 0.31, p < 0.001), suggesting benefits beyond active technology engagement. The study contributes to smart city literature by providing empirical evidence for the often-assumed link between smart city development and resident well-being, while also extending the application of the Technology Acceptance Model to urban contexts. These findings have important implications for urban planners and policymakers, emphasizing the need for user-centered design and inclusive development strategies in smart city projects to maximize positive impacts on urban populations.