In this paper the application of spatialization technology on metadata quality check and updating was discussed. A new method based on spatialization was proposed for checking and updating metadata to overcome the deficiency of text based methods with the powerful functions of spatial query and analysis provided by GIS software. This method employs the technology of spatialization to transform metadata into a coordinate space and the functions of spatial analysis in GIS to check and update spatial metadata in a visual environment. The basic principle and technical flow of this method were explained in detail, and an example of implementation using ArcMap of GIS software was illustrated with a metadata set of digital raster maps. The result shows the new method with the support of interaction of graph and text is much more intuitive and convenient than the ordinary text based method, and can fully utilize the functions of GIS spatial query and analysis with more accuracy and efficiency.