Abstract: Digital regional geological survey is a problem that needs urgent solution in the main informatization course in geological survey and mapping. Based on the present state of the digital field geological survey and digital mapping techniques and mapping data capturing techniques in developed countries, coupled with the actual conditions of China, the authors discuss the field geological survey and mapping digital data capturing techniques, data model, technical flow chart and tools and methods of applying digital mapping techniques for the purposes of changing the conventional mapping means, raising the research accuracy and degree, accelerating the cycle of research work and changing the form of presentation of the research results.