For　rotating　blades　with　fin　heaves　used　in　steam　turbines,　large　deflection　and　contact　effects　must　be　taken　into　account.　By　using　3-D　finite　element　model　and　the　augmented　Lagrangian　formulation,　contact　pressure　between　fin　heaves　is　analyzed.　Contact　friction　considered,　the　relation　curve　of　the　contact　pressure　vs.　rotating　speed　is　obtained　and　intrinsic　frequencies　of　blades　at　3000　r/min　are　calculated.　Calculating　results　show　that　two　neighbored　fin　heaves　become　to　contact　at　rotating　speed　of　400　r/min.　After　this,　contact　pressure　increases　steadily　as　the　rotating　speed　increases.　However,　as　the　speed　reaches　1825　r/min,　increasing　of　the　contact　pressure　becomes　to　slow　down　apparently.　At　3000　r/min,　the　contact　pressure　reaches　its　maximum　of　700　MPa　and　the　contact　area　is　about　1/4　of　the　design　contact　area.