Blade　is　twisty　and　thin-wall　part　with　complicated　curved　surface.　Therefore,　blade　metrology　technology　has　always　been　the　frontier　and　hot　research　topic　in　the　field　of　manufacturing.　The　principle　and　technical　characteristics　of　different　measuring　methods　for　blade　were　analyzed　comprehensively.　The　key　technologies　for　blade　measurement　were　refined,　and　the　general　requirements　and　development　direction　were　summarized,　which　are　high　precision,　high　efficiency,　comprehensive　information　and　integrated　measurement.　Additionally,　the　technology　gap　of　blade　measurement　between　the　domestic　and　foreign　was　discussed,　and　the　key　technologies　and　countermeasures　were　also　pointed　out.　Analysis　shows　that　it　is　urgent　to　find　a　feasible　way　to　solve　the　blade　precision　detection　through　the　principle　innovation.　A　novel　technical　solution　for　blade　measurement　based　on　overall　error　analysis　theory　is　introduced　as　well,　which　can　implement　comprehensive　quality　information　fast　access,　quality　evaluation　and　process　error　analysis　for　blade,　and　have　a　good　prospect　for　development.　©　2017,　Editorial　Department　of　Journal　of　Beijing　University　of　Technology.　All　right　reserved.