The　technological　development　of　jointless　bridges　was　reviewed,　the　advatages,　application　and　research　hotspots　were　introduced,　the　longitudinal　stress　characteristics,　pile-soil　interaction,　earth　pressure　of　backfill　on　the　autment　and　seismic　performance　were　analyzed,　and　the　present　situation　and　development　direction　of　the　new　technology　research　and　application　were　pointed　out.　Analysis　results　show　that　the　technologies　of　jointless　bridges　have　been　attached　to　importance　in　many　countries,　and　a　large　number　of　field　monitoring　projects　and　other　researches　have　been　carried　out.　The　temperature-induced　deformation　is　the　main　cause　of　longitudinal　stress　of　jointless　bridge,　and　the　average　temperature　difference　predicted　by　the　codes　is　quite　different　from　the　data　obtained　from　field　monitoring.　Therefore,　a　preciser　calculation　method　should　be　developed.　Pile-soil　interaction　is　the　dominant　characteristic　of　integral　bridge　and　is　the　emphasis　and　difficulty　of　the　research.　In　calculating　the　soil　resistance,　the　m　method　should　be　limited　to　jointless　bridges　with　small　movements,　while　the　p-y　curve　method　should　be　employed　when　the　movements　are　larger.　The　piles　of　the　integral　abutments　are　stressed　complexly,　H-shaped　steel　piles　may　be　subjected　to　yielding,　fatigue,　and　buckling,　while　RC　piles　arc　prone　to　be　damaged　by　cracking.　The　high　earth　pressure　behind　the　abutment　induced　by　temperature　rise　is　a　hot　spot　and　difficulty　in　the　research.　The　mechanism,　magnitude,　and　distribution　of　the　earth　pressure　increasing　with　the　horizontal　movement　and　reciprocating　number　have　not　reached　a　consensus,　and　need　to　be　further　studied　systematically.　In　analyzing　the　longitudinal　behaviour　of　jointless　bridge,　the　finite　element　model　should　involve　the　whole　structure　of　the　bridge,　and　considering　the　soil-structure　interaction　and　the　nonlinear　performance　of　the　joint.　The　stability　of　steel　girders　under　compression　and　the　crack-resistance　of　concrete　girders　under　tension　are　the　key　points　in　research　and　design.　The　approach　slab　is　an　important　and　damage-prone　component　of　jointless　bridges.　For　the　grade　flat　approach　slabs,　the　frictional　resistance　at　the　bottom　should　be　reduced,　and　the　cracking　and　end　settlement　should　be　avoided.　While　for　the　buried　inclined　approach　slabs,　the　swell　and　settlement　of　approach　pavement　above　their　ends　should　be　controlled.　Many　new　technologies　for　jointlcss　bridges　have　been　proposed,　applied,　and　should　be　further　studied,　including　the　application　of　new　materials　and　new　details　in　various　components,　abutments,　pile　foundations,　and　approach　slabs　of　jointless　bridges.　Jointless　bridges　have　higher　structural　robustness　and　capability　to　prevent　collapse　and　unseating　of　the　superstructures.　The　research　on　the　seismic　resistance　of　jointless　bridges　has　made　gratified　progress,　but　the　relevant　design　regulations　have　not　been　formed　in　many　countries.　It　is　necessary　to　conduct　comprehensive　research　to　provide　a　scientific　basis　for　engineering　application　and　the　formulation　of　the　specifications　in　the　future.　©　2022　Chang＇an　University.　All　rights　reserved.