Gear　elemental　deviations,　such　as　profile　deviations,　are　important　items　for　gear　accuracy　evaluation　and　generally　measured　on　a　Gear　Measurement　Center　or　Coordinate　Measuring　Machine.　There　are　installation　errors　when　the　gear　installed　on　the　shaft　positioned　in　the　center　before　measurement.　Therefore,　the　evaluation　method　of　gear　profile　deviations　considering　installation　errors　was　introduced　to　measure　gear　profile　deviations　without　the　precise　adjustment　of　installation　errors　in　the　study.　In　this　method,　installation　errors　were　described　as　the　installation　eccentricity　error　and　the　installation　wobbling　error.　Then,　the　installation　error　model,　the　coordinate　transformation　model　and　the　tooth　profile　deviation　evaluation　method　were　established.　The　gear　base　circle　center　was　calculated　with　the　tooth　profile　measurement　points.　Then,　the　tooth　profile　measurement　points　under　the　machine　coordinate　system　were　transformed　into　the　coordinates　in　the　work-piece　coordinate　system.　After　that,　the　profile　deviations　were　evaluated　according　to　ISO　1328-1:2013.　The　measurement　experiments　were　carried　out　on　a　gear　measurement　center　under　different　installation　errors.　The　application　scope　of　the　method　was　discussed　by　simulation.　The　range　of　the　total　profile　deviation　obtained　with　this　method　was　0.51　mu　m　under　four　groups　of　the　installation　conditions,　whereas　the　value　obtained　with　GMC　was　3.17　mu　m.　Experimental　results　showed　that　this　method　could　significantly　decrease　the　influence　of　installation　errors　for　measuring　gear　profile　deviations　under　the　rough　positioning　conditions　of　product　gears.　(C)　2019　Elsevier　Ltd.　All　rights　reserved.