Lead　sulfide　quantum　dots　(PbS　QDs)　show　great　potential　application　in　near　infrared　range,　and　incorporation　of　PbS　QDs　into　all　solid　glass　matrix　improves　both　their　chemical　and　thermal　stabilities　as　well　as　the　shaping　ability.　However,　the　incorporation　of　PbS　QDs　into　all　solid　glass　matrix　makes　it　difficult　to　modify　their　surface,　resulting　in　the　relatively　low　absolute　photoluminescence　quantum　yield　(PL　QY)　caused　by　the　surface　defects.　Here,　PbS　QDs　with　tunable　photoluminescence　band　in　near-infrared　range　in　silicate　glasses　were　prepared　by　melting-quenching　method.　By　addition　of　chloride　and　forming　PbClx　shell　around　PbS　QDs　in　glass,　defects　induced　by　surficial　lead　ions　of　above　PbS　QDs　can　be　effectively　passivated,　reducing　subsequent　trapping　of　photo-generated　electrons　accordingly.　PL　QY　of　PbS　QDs　inbuilt　glasses　is　enhanced　eventually　and　achieved　as　high　as　49.3　%.　Furthermore,　thermo-　and　photo-stabilities　of　PbS　QDs　in　glass　are　greatly　improved　compared　with　those　without　surface　chlorine　passivation.　These　high　performance　PbS　QDs　embedded　glasses　with　excellent　stability　show　significant　potential　in　light-emitting　diodes,　lasers　and　fiber　amplifiers　in　near-infrared　range.　©　2024　Elsevier　B.V.