Abstract: The drawings automatically formed with the measured database would be based on the digitalized drawings or Auto CAD processed drawings and would all lack completed topological space relationship of the mine roadway network. In order to solve the problem,the paper provided the mine roadway 3D data model with the top ological relationship,data structure and data automatic processing method.Those calculation methods would include the arch section separation of the completed roadway, data model,data structure,node processing,arch section position location relation judged based on the vector method and others. The related study in Dongtan Mine was ve rified. The results showed that the technology application could automatically and rapidly form the topologic network drawings of mine roadway,could be favorable to the au tomatic modeling of mine roadway,mine emergency rescue route simulation,personnel positioning tracing replay and other actual applications.