Based　on　a　creep　model　for　microprestress-solidification　theory,　considering　the　influence　of　material,　structure　and　environmental　parameters,　a　three-dimensional　simulation　program　for　early-age　mechanical　behavior　of　pavement　was　established,　and　the　creep　effects　mechanism　of　three-dimensional　pavement　structure　were　analyzed.　The　results　show　that　creep　is　a　relaxation　effect　on　early-age　pavement,　which　significantly　reduces　the　early-age　curling　and　stress.　The　influence　magnitude　of　creep　on　early-age　behavior　of　pavement　is　similar　to　that　of　temperature　gradient　and　that　of　edge　constraint.　Creep　effect　is　also　significantly　affected　by　edge　constraint,　temperature　gradient,　humidity　gradient　and　overall　temperature　conditions,　and　has　spatial　position　non-uniform　distribution　characteristics.　Under　the　effect　of　creep,　the　maximum　relaxation　position　of　stress　is　close　to　the　middle　of　the　restricted　edge.　The　creep　relaxation　effect　has　significant　time-dependent　characteristics.　It　is　most　significant　in　the　first　7　days　and　tends　to　be　stable　after　60　days.　Creep　relaxation　effect　increases　significantly　with　temperature　gradient　and　overall　temperature　increasing.　Theoretical　comparison　shows　that,　ignoring　the　influence　of　temperature　will　underestimate　the　creep　effect　under　high　temperature　and　overestimate　the　creep　effect　under　low　temperature.　It　is　recommended　to　use　creep　effect　design　to　reduce　early-age　curling　and　stress　in　pavement　engineering.　Copyright　©2022　Engineering　Mechanics.　All　rights　reserved.