Diabetes is an increasingly serious global public health problem. China is one of the countries with the fastest growing prevalence of diabetes，and the prevalence rate in urban areas is higher than that in rural areas. The “City Changing diabetes” project entered China in 2014，with Tianjin，Shanghai，Xiamen，Hangzhou，Beijing，Chongqing and other six cities joining in. The project aims to think and act on the management of diabetes from the perspective of the city，reduce the incidence rate of diabetes，improve the comprehensive management ability of diabetes，and improve the health of residents. In 2017，China’s health knowledge dissemination incentive plan listed “cities changing diabetes” as a special topic，and 98 demonstration areas for comprehensive prevention and control of chronic diseases in 77 cities nationwide participated in the action. With the support of governments at all levels，the project uses the advantages of international cooperation and regional resources to promote the multi-party cooperation of relevant departments，help improve the diagnosis，treatment and management ability of diabetes at the grass-roots level，the health literacy of urban residents，and the health level and quality of life of diabetes patients，and also provide a useful reference for the development of diabetes prevention in China.