Urbanization has driven the growth of high-rise residential areas, creating unique challenges for enhancing residents’ well-being, especially in large metropolitan regions. This study investigated the impact of smart green spaces—green areas integrated with technology to optimize environmental benefits—on environmental awareness, social cohesion, and life satisfaction in these dense urban environments. Utilizing data collected from questionnaires and field interviews in seven representative high-rise residential areas in Guangzhou, China, the structural equation model (SEM) was employed to explore the complex effects of smart green spaces. The findings reveal positive correlations between the presence, accessibility, and technological features of smart green spaces, which contribute to heightened environmental awareness, strengthened social bonds among residents, and increased life satisfaction. These results emphasize the diverse benefits of urban green spaces enhanced by smart technologies, beyond their aesthetic and recreational roles. This study suggests that strategic planning and policy initiatives focused on the development and operation of smart green spaces can substantially improve urban residents’ well-being by fostering environmental consciousness, promoting community interaction, and enhancing the overall quality of life in high-rise residential settings. These insights are crucial for urban planners, policymakers, and community stakeholders, providing a blueprint for leveraging smart green spaces in creating sustainable, resilient, and livable urban environments.