The　effects　of　structural　finite　element　(FE)　model　updating　based　on　different　objective　functions　were　compared　through　numerical　example　of　FE　model　updating　of　a　simply-supported　beam　using　the　zero-order　and　first-order　optimization　arithmetic　in　commercial　ANSYS　program.　After　that,　an　FE　model　updating　method　combined　static　displacement　and　dynamic　modal　flexibility　was　proposed.　Based　on　the　proposed　method,　the　FE　model　of　a　rigid-frame　arch　bridge　after　strengthening　was　updated　and　the　baseline　FE　model　of　the　arch　bridge　after　strengthening　was　constructed.　The　results　show　that　the　static　and　dynamic　characteristics　obtained　from　the　updating　FE　model　and　field　testing　correlate　very　well,　and　effect　of　FE　model　updating　combined　the　structural　static　and　dynamic　characters　together　is　good.　The　updating　FE　model　of　bridge　may　serve　as　the　base　of　health　monitoring　and　safety　evaluation　of　bridge.