Abstract: With the continuous development of science and technology, volunteer geographic information (VGI) has become one of the most important data sources in geographic data acquisition. In order to make more efficient use of such volunteered data, the VGI is often needed to be integrated to the corresponding traditional datasets. We develop a special case of data integration between the topographic dataset of ATKIS maintained by German Surveying and Mapping Agencies and the AOSD data primarily collected by numerous enthusiasts (volunteers) of jogging, hiking, biking (including road and mountain), etc. Considering that the VGI of AOSD reveals quite different LODs (level of details) to the traditional topographic dataset of ATKIS, we put forward a new approach to realize highly automatic and accurate integrations of these two datasets. The proposed approach is characterized by 4 processes:(1) intelligent segmentation of the road features, (2) road-networks matching between different datasets, (3) data integration between different road networks and (4) internal data matching and integration in the conflated road network. Experimental results demonstrate high performance with respect to matching rate, matching accuracy and computing speed in a number of large test areas.