The　anchorage　performance　of　reinforcement　in　high-strength　grouting　materials　plays　a　decisive　role　in　the　safety　of　prefabricated　reinforced　concrete　structures.　At　present,　the　design　value　of　anchorage　length　of　reinforcement　in　grouting　materials　or　concrete　in　the　codes　of　various　countries　is　conservative,　generally　greater　than　20　times　the　diameter　of　reinforcement.　Moreover,　the　anchorage　length　is　the　empirical　value　obtained　from　the　test　of　connecting　the　reinforcement　with　the　grouting　sleeve　and　is　not　based　on　the　bond-slip　performance　of　the　reinforcement　and　the　grouting　material.　Therefore,　based　on　the　interface　bond-slip　performance　test　of　two　media,　this　paper　comprehensively　considers　the　influence　of　reinforcement　diameter,　strength　grade,　anchorage　length,　and　high-strength　grouting　material　strength　on　the　ultimate　bond　strength,　gives　the　calculation　formula　of　anchorage　length　and　establishes　a　nonlinear　three-segment　bond-slip　constitutive　model.　The　research　in　this　paper　shows　that　the　anchorage　length　between　high-strength　grouting　material　and　reinforcement　to　ensure　bonding　safety　is　7.1　d–10.8　d,　which　is　far　less　than　the　recommended　anchorage　length　in　the　specification.　It　can　provide　a　reference　for　the　design　of　prefabricated　structures　based　on　grout-anchored　reinforcement　connections.　©　2023　Elsevier　Ltd