The　geometric　errors　parameters　are　important　for　machining　accuracy　of　five-axis　machine　tool.　However,　most　of　the　error　identification　methods　only　based　on　the　detection　instruments　to　achieve　identification　of　single　error　parameter,　without　considering　the　coupling　relationship　of　these　errors　between　five　axes.　This　paper　measures　and　identifies　the　position-dependent　error　parameters　and　verticality　errors　of　non-orthogonal　five　axis　machine　tools.　First,　position-dependent　error　parameters　related　to　the　translational　axis　are　measured　by　the　laser　interferometer.　Next,　based　on　its　identification　method,　the　rotary　axis　is　measured　in　the　axial,　radial　and　tangential　measurement　modes　by　using　a　double　ball　bar.　With　the　measured　result,　18　position-dependent　errors　which　related　to　the　motion　of　linear　axis,　6　position-dependent　error　parameters　and　2　verticality　errors　of　axis　C　and　4　position-dependent　error　parameters　and　1　verticality　error　of　axis　B　are　identified.　Finally,　the　identification　results　are　verified　by　the　compensation　of　an　actual　process　on　the　sample　of　S-shaped　piece,　whose　precise　results　show　that　the　machining　precision　increased　by　84.2%　on　average　after　compensation.　Consequently,　the　measurement　and　identification　method　as　well　as　the　effectiveness　of　the　compensation　method　of　this　paper　are　verified.