Double-flank　measurement　is　the　most　commonly　used　method　for　full　inspection　of　mass-produced　gears　and　has　high　measurement　efficiency,　but　it　cannot　obtain　the　analytical　parameters　and　is　not　helpful　enough　to　evaluate　the　NVH　performance　of　the　gears.　Based　on　the　double-flank　rolling　tester　with　a　new　principle,　a　simulation　method　for　double-flank　measurement　and　a　solving　method　for　analytical　parameters　are　proposed.　Using　the　simulation　method,　the　double-flank　measurements　without　random　error　can　be　obtained　through　the　collision　detection　algorithm.　The　solving　method　uses　the　iteration　to　obtain　the　minimum　rolling　length　of　each　position　of　the　tooth　surface,　then　obtains　the　analytical　parameters　of　the　gear.　In　the　experiments,　the　difference　between　the　profile　deviations　obtained　by　the　solving　method　and　superimposed　in　the　simulation　method　is　less　than　0.03　mu　m.　The　experiment　results　have　verified　the　correctness　of　the　simulation　method　and　the　solving　method.　These　methods　can　greatly　improve　the　value　of　double-flank　measurement.