This　paper　examines　the　results　of　bond-slip　experiments　on　reinforced　concrete　with　embedded　ultrahighstrength　steel　bars　with　spiral　grooves　(UHSSBs).　It　includes　the　analysis　of　twenty-seven　pullout　specimens　with　different　concrete　compressive　grades　and　embedment　lengths　to　evaluate　the　bond　responses.　The　rotations　of　UHSSBs　are　recorded　during　pullout　tests　to　describe　the　theory　behind　the　bonding　mechanism　of　UHSSBs　embedded　in　reinforced　concrete.　According　to　the　test　results,　the　specimens　with　higher　concrete　compressive　strengths　exhibited　higher　bond　strengths.　Moreover,　all　the　specimens　with　different　embedment　lengths　exhibited　similar　trends　i.e.,　the　bond　strength　decreased　to　different　degrees　with　increasing　embedment　length.　After　the　mechanisms　of　the　bond　behavior　were　described,　a　new　analytical　model　was　proposed　to　analyze　the　bond　strengths　of　UHSSBs　embedded　in　reinforced　concrete　under　monotonically　increasing　tensile　loads,　taking　into　account　the　spiral　characteristics　of　UHSSBs.　Based　on　the　model　introduced,　the　parameters　(i.e.,　the　concrete　strength　and　embedment　length)　affecting　the　analytical　model　were　discussed,　and　the　calculated　bond　strengths　agreed　well　with　the　measured　values,　which　indicated　that　the　values　could　be　obtained　quickly　and　offered　a　reference　for　further　practical　structural　design.