Abstract: Recently, as the demand for high value-added spatial information contents increases, various technologies for spatial information security are increasingly needed. However, supplementary policies are managed independently in each system, There is a problem that the reliability is poor. Therefore, GeoXACML is proposed based on XACML in OGC for the control of spatial information access as the need for a common language for expressing security policies increases. GeoXACML extends spatial information types and functions for spatial access control. Therefore, this study develops GeoXACML based access control technology that can expand the grammar and semantics and provide integrated security policy for many platforms and programs.