This article aims to investigate sustainable development practices in hospitals, for three primary reasons: preserving the surrounding environment, impacting sustainability through service provision, and ensuring a safe and environmentally friendly atmosphere. The study addresses the gap in understanding the dimensions and implementation of green practices, offering insights into the green hospitals model. The study figured out eight practices that reflected sustainability activities in the Saudi public hospitals, with their significant impact on sustainable development. The study used descriptive methodology with quantitative technique to collect data pertaining to the impact of green practices on sustainable development in the Saudi public hospitals. A questionnaire survey with valid responses was distributed to 118 members working in the hospitals as (doctors, nurses, and administrators) in April 2024. The PLS-SEM statistical method was used for data analysis. The results of this study revealed a positive relationship between four green transition practices and Sustainable development. Keywords: Green practices in hospitals, sustainability, Sustainable development, public hospitals, healthcare institutions