The　shrinkage　characteristics　of　ultra-high　performance　concrete　(UHPC)　were　analyzed.　The　general　rules　of　UHPC　contraction　with　time　were　introduced.　The　influences　of　material　composition,　curing　regime,　internal　temperature　and　internal　humidity　on　UHPC　shrinkage　were　summarized.　Research　result　indicates　that　the　shrinkage　of　UHPC　develops　rapidly　at　0-7　d,　accounting　for　61.3%-86.5%　of　total　shrinkage,　develops　slowly　from　7　d　to　28　d,　accounting　for　13.5%-27.9%,　and　becomes　steady　after　28　d.　Autogenic　shrinkage　is　the　main　cause　of　early　cracking　of　UHPC,　and　accounts　for　78.6%-90.0%　of　total　shrinkage.　In　term　of　the　start　point　about　shrinkage　test,　the　initial　time　of　test　is　1　d　(24　h)　after　specimen　forming,　and　the　termination　time　is　90　d　or　120　d.　In　term　of　structural　design,　it　may　refer　to　the　values　(500-800　με)　in　various　countries＇　standards,　and　not　to　consider　the　residual　shrinkage　after　heat　curing.　In　term　of　shrinkage　prediction　models,　the　norms　of　all　countries　have　not　been　uniformed　yet,　it　can　only　refer　to　the　existing　models,　and　the　shrinkage　prediction　models　should　be　improved　and　revised.　In　term　of　component　research,　the　quantitative　impacts　of　types　and　contents　of　fibers　and　mineral　admixtures　on　the　shrinkage　are　research　emphasis,　the　effect　of　each　component　on　the　shrinkage　is　different,　and　the　evaluation　indexes　are　relatively　simple　and　should　be　combined　with　structural　applications,　preparation　techniques　and　construction　process　to　comprehensively　evaluate　the　shrinkage.　In　term　of　the　internal　temperature　and　humidity　fields,　the　research　mainly　concentrates　on　normal　concretes,　high-strength　and　high-performance　concretes　after　28　d,　and　it　should　be　more　in-depth　study　on　the　early　internal　temperature　and　humidity　fields　of　UHPC　with　the　large　content　of　cementitious　material,　obvious　difference　of　components,　and　high　content　of　active　mineral　admixture.　In　term　of　reducing　shrinkage,　internal　curing,　expansive　agent,　shrinkage-reducing　agent,　coarse　aggregate,　and　other　measures　are　applied.　Therefore,　it　should　optimize　the　ratio　of　UHPC,　rationalize　the　use　of　admixture,　and　adopt　proper　curing　system　and　other　measures　to　reduce　the　shrinkage　of　UHPC,　but　not　to　reduce　its　mechanical　properties.　©　2018,　Editorial　Department　of　Journal　of　Traffic　and　Transportation　Engineering.　All　right　reserved.