The　evaluation　and　measurement　of　the　beam　quality　for　a　high　power　manufacturing　laser　were　established　based　on　modern　laser　manufacturing.　The　measuring　parameters,　measuring　principle,　method,　equipment　and　calculation　were　investigated.　Firstly,　based　on　the　parameter　analysis　on　distinguishing　the　laser　beam　quality　at　present,　the　relationship　between　beam　quality　and　beam　width　was　discussed　by　taking　the　beam　propagation　ratio　(M2)　and　beam　parameter　product　(Kf)　for　examples.　Then,　the　proper　parameters　were　proposed.　Finally,　a　method　based　on　the　object　of　actual　measurement　and　results　were　introduced.　Experimental　results　indicate　that　the　Kf　value　of　DC035Slab　CO2　laser　and　TLF6000tCO2　laser　are　3.78　mm·mrad　and　8.67　mm·mrad,　respectively.　It　is　concluded　that　the　Kf　value　is　the　calculation　results　of　hyperbolic　fitting　based　on　the　actual　measurement　of　beam　radius　at　different　positions　along　the　laser　beam　propagating　direction,　the　capability　and　focus　ability　of　high　power　laser　propagation　can　be　reflected　better,　which　defines　well　the　laser　performance　for　manufacturing　systems.