In　this　paper,the　blade　is　assumed　to　be　a　rotating　variable　thickness　cantilever　twisted　plate　structure,and　the　natural　vibrations　of　variable　thickness　cantilever　twisted　plate　made　of　metal　porous　material　are　studied.It　is　assumed　that　the　thickness　of　the　plate　changes　along　spanwise　direction　and　chordwise　direction,respectively,and　it　changes　in　both　directions.The　classical　thin　shell　theory,the　first　and　second　fundamental　forms　of　surface　and　von　Karman　geometric　relationship　are　employed　to　derive　the　total　potential　energy　and　kinetic　energy　of　the　cantilever　twisted　plate,in　which　the　centrifugal　force　potential　due　to　high　rotational　speed　is　included.Then,according　to　the　Rayleigh-Ritz　procedure　and　applying　the　polynomial　functions　which　satisfy　the　cantilever　boundary　conditions,the　dynamic　system　expressed　by　equations　of　motion　is　reduced　to　an　eigenvalue　problem.By　numerical　simulation,the　frequency　curves　and　the　mode　shapes　of　the　twisted　plate　can　be　obtained　to　reveal　the　internal　connection　between　natural　vibration　and　the　parameters.A　series　of　comparison　studies　are　performed　to　verify　the　accuracy　of　the　present　formulation　and　calculations,in　which　compared　data　come　from　experimental,finite　element　method　and　theoretical　calculation,respectively.The　influence　of　pre-twist　angle,three　different　forms　of　thickness　taper　ratio　and　rotational　speed　on　natural　vibration,mode　exchange　and　frequency　veering　phenomenon　of　the　system　is　discussed　in　detail.In　addition,the　approach　proposed　here　can　efficiently　extract　analytical　expressions　of　mode　functions　for　rotating　variable　thickness　cantilever　twisted　plate　structures.