Abstract: The development of regional geological mapping to three-dimensional geological survey and modelling is an issue of great concern to the geological surveys worldwide. Therefore China Geological Survey (CGS) and Saskatchewan Geological Survey (SGS) have carried out a 3-year cooperation in 3-D geological survey. Based on the field bedrock mapping work in the Precambrian area of northern Saskatchewan and the exchange of 3-D geological modelling techniques, the paper introduces the complete process from project arrangement, data compilation, fieldwork and cartographic representation in regard to bedrock mapping, and also the procedures and techniques of 3-D geological modelling. Saskatchewan Geological Survey carries out their geological mapping aiming at key geological problems and meeting social demands, takes full account of consistency of developing from geological mapping to 3-D modelling in personnel organization, data management and software platform construction, and pays particular attention on information sharing to serve the public. All of these experiences are worth learning for us.