China's long-term care insurance has experienced more than 10 years, from spontaneous exploration to national pilots, and has accumulated some practical experience and theoretical achievements. However, the academic studies on the supply side, especially research on the socialized platform services of important supply side carriers, are relatively not enough. This paper takes the innovation of long-term care insurance management service and the improvement of supply side capacity as the starting point, analyzes the background and necessity of socialized long-term care insurance service platform in China, and puts forward suggestions and preliminary ideas for building a socialized service platform for long-term care insurance, so as to provide reference for decision-making and research.