This　paper　proposes　a　novel　wall-type　self-centering　slip　friction　damper　(WSCSFD),　which　mainly　comprises　of　the　grooved　T-shape　and　L-shape　plates　that　are　combined　by　stacked　disc　springs.　The　damper　resists　shear　forces　arising　from　the　inter-story　drifts　under　earthquakes.　By　leveraging　the　variable　friction　mechanism　and　the　pre-compressed　disc　springs,　the　WSCSFD　can　provide　self-centering　capability　and　energy　dissipation　capacity.　The　configuration　and　working　mechanism　of　WSCSFD　were　first　discussed.　And　then,　the　theoretical　equations　governing　the　force-displacement　relationship　were　derived.　One　reduced-scale　damper　specimen　was　fabricated　to　conduct　the　proof-of-concept　tests.　The　test　results　validated　the　deformation　mode　and　cyclic　behavior　of　the　WSCSFD.　The　hysteretic　parameters　related　to　seismic　applications　were　quantified　and　discussed.　To　complement　the　experimental　observations　and　gain　a　further　understanding　of　the　local　behavior,　three-dimensional　finite　element　(FE)　models　were　established　in　ABAQUS.　Finally,　to　address　the　deficiencies　of　the　damper　specimen,　some　potential　improvement　approaches　were　suggested　and　evaluated　through　the　validated　FE　models.