With the purpose of becoming world-class city science research base and professional think-tank, National Smart City Joint Lab (preparatory) is founded by Chinese Society for Urban Studies (CSUS) to support the China smart cities development. 　　Focusing on smart city key technical problems, National Smart City Joint Lab is a service organization that teams up the smart city enterprises, universities, academic research centers and other correlative organization to establish a long-term cooperation mechanism. 　　To support the China smart city development and related the ministries, the Joint Labs focuses on smart city science and research, standardization, smart city planning consultant, test and evaluation. So far, we have established 19 different Joint Labs with worldwide smart city related organizations that covers in varies fields such as smart city solutions, spatial information, information security, media communication and promotion, big data and city operation, water management projects, Green building, smart infrastructure, smart tourism, smart community etc..