GML在GIS领域，将对『资料交换』课题的扮演关键的角色，GIS 的参与者实有必要对GML的内容有深入的了解，本文将介绍GML的架构，并以范例说明-GML in the GIS field, exchange of information will 『』 issues play a key role, GIS participants there was a need for the content of GML have a deeper understanding, this article will introduce the structure of GML, and the example illustrates