With the rapid development of day surgery in China, ensuring continuous recovery services for patients after discharge has become an urgent issue. In response, this paper outlines the concept and development status of day surgery, emphasizes the importance of establishing an extended recovery system, summarizes relevant model innovation cases, discusses key elements for building an extended recovery system, including social resource engagement, multidisciplinary collaboration, institutional safeguards and technical support, and docking system platform to smooth the transmission of information, and proposes suggestions for future development. This paper provides theoretical and practical references for developing an extended recovery system for day surgery in China.