In the process of construction of spacial database, its necessary to check and correct the errors in the digital map. How to transform the elevation data from 2D systems to 3D systems to check and find out the errors, and then correct them in the 2D systems are presented. The check methods of the elevation data are designed and expatiated. These methods have been used in the data check of Yangtze River hydrologic sediment information analysis - management system. They are not only adapted to the spatial database based on GeoView software, but also adapted to other kinds of vector data.