Abstract: China Geological Survey has spent nearly 10 years to realize the whole digitized process in the field of fundamental geological and mineral survey. With the generation of new information technologies such as "cloud" computing and big data, what is the orientation and objectives for the main flow informatization of geological survey in the next 5-10 years? On the basis of the new intelligent information technology and smart devices applied to geological survey data acquisition, analysis, exchange transmission, 3D modeling, ubiquitous information services and business management, the definition of smart geological survey has been formulated according to the smart space theory and ubiquitous computing concept. The smart geological survey architecture and application model with the technological integration of Space-Air-Ground has been proposed based on cloud computing and Hadoope ecological system. In addition, the key technology of smart geological survey architecture has been discussed.