The　integral　abutment　jointless　bridge　(IAJB)　has　a　long　service　life,　convenient　construction,　and　less　building　and　maintenance　costs.　For　these　advantages,　the　IAJB　has　been　widely　used　in　foreign　and　domestic　practical　engineering.　However,　reciprocating　displacement　of　the　IAJB　occurs　under　seasonal　temperature　loads,　and　the　abutment-pile-soil　interaction　is　produced.　Thus,　an　abutment-pile　structural　test　model　was　designed　and　manufactured　based　on　Fujian　Shangban　Bridge.　Using　the　model,　the　reciprocating　low-cycle　pseudo-static　test　was　carried　out　for　the　integral　abutment-H-shaped　steel　pile-soil　interaction.　The　hysteretic　behavior,　lateral　deformation　law,　and　interactive　mechanism　of　integral　abutment-pile-soil　were　studied.　The　results　indicate　that　the　equivalent　damping　ratio　of　abutment　and　pile　is　more　than　0.15,　suggesting　that　the　IAJB　has　a　favorable　seismic　performance.　The　pile　of　an　IAJB　is　in　the　elastic　stage　under　the　local　temperature　effect;　however,　it　carries　a　residual　deformation.　The　cavitation　of　soil　for　a　range　of　widths　and　depths　of　the　pile　head/abutment　bottom,　and　void　phenomenon　of　backfill　at　abutment　can　be　observed.　The　cause　of　bumps　at　the　bridge　ends　and　the　settlement　under　approach　slab　not　only　relate　to　the　backfill　properties　of　abutment　but　also　to　the　behavioral　mechanism　of　the　abutment　structure　and　soil.　In　addition,　when　simply　measured　and　analyzed,　the　deformation　over　the　surface　of　the　pile　cannot　accurately　demonstrate　the　distribution　of　lateral　deformation.　The　accumulative　deformation　of　the　abutment-pile-soil　interaction　was　examined,　and　it　is　determined　that　the　accumulative　deformation　on　the　pile　is　larger　than　that　of　the　abutment.　Moreover,　the　overall　accumulative　deformation　is　larger　than　that　produced　by　the　individual　load　steps.　Presently,　the　existing　theory　for　calculating　the　lateral　deformation　of　abutment-pile　foundation　does　not　take　into　account　the　impact　of　accumulative　deformation.　Thus,　this　study　may　serve　as　a　reference　for　the　relevant　construction　codes.　©　2019,　Editorial　Department　of　China　Journal　of　Highway　and　Transport.　All　right　reserved.