Smart healthcare is the result of the deep integration of the medical and health services industry with information technology. Thanks to the support of government policies，the expansion of market size，and the continuous increase in application scenarios，it has rapidly developed in China in recent years. Web 3.0 technology，with its characteristics of decentralization and data privacy protection，provides new opportunities for the development of smart healthcare，including enhancing the sovereignty of patient data，improving the sharing of medical data，and increasing the efficiency of medical processes. At the same time，Web 3.0 technology has shown great potential in remote medical consultation，auxiliary diagnosis，patient record management，smart hospital construction，and personalized health management. Despite facing challenges in various aspects such as technology maturity，policy and regulation，data privacy，and standardization，Web 3.0，based on the integration and innovation of various technologies，will bring more efficient，convenient，and personalized services to the medical industry，promote the innovation of medical service models and the transformation and upgrading of the medical system，and ultimately help the high-quality development of smart healthcare.