Due　to　a　lower　intrinsic　thermal　conductivity,　Cu2S-based　thermoelectric　materials　are　attracting　extensive　attention.　However,　they　still　confront　the　problem　of　higher　electrical　resistivity,　which　distinctly　restricts　their　thermoelectric　application.　Herein,　we　synthesized　Ag-incorporated　Cu2-xS　micro/nano　composites　using　a　hydrothermal　method.　It　was　found　that　the　doping　of　Ag　nanoparticles　could　effectively　enhance　the　electrical　transport,　while　the　generated　nanopores,　caused　by　the　sintering　of　Ag　nanoparticles　during　the　SPS　process,　reduced　the　thermal　conductivity.　As　a　result,　a　maximum　ZT　value　of　∼1.5　was　obtained　at　773　K　in　the　Cu2-xAgδS　(δ　=　0.5%)　micro/nano　composites,　much　higher　than　that　of　the　pristine　Cu2-xS　micro/nano　composites.　This　work　provides　a　new　pathway　to　boosting　thermoelectric　performance　through　microstructural　engineering.　©　2022