Due　to　containing　abundant　FeOx,　Si　and　trace　heavy　metals　(Pb,　As,　Cr,　Cd,　etc.),　the　disposal　of　non-ferrous　metallurgical　waste　slag　(NMWS),　such　as　copper　slag,　lead　slag,　zinc　slag　and　nickel　slag,　has　attracted　more　and　more　attention.　When　the　NMWS　is　applied　as　raw　material　for　preparing　glass-ceramics,　the　heavy　metals　in　NMWS　could　be　well　solidified　in　glass-ceramics.　However,　the　FeOx　or　Si　content　in　NMWS　would　easily　affect　the　melting　process　of　NMWS　and　increase　energy　consumption.　This　greatly　limits　the　large-scale　application　of　NMWS　on　glass-ceramics.　Based　on　the　review　of　glass-ceramics　prepared　by　NMWS,　this　work　focuses　on　the　pretreatment　technology　of　pig　iron　and　ferrosilicon　alloy　prepared　by　NMWS.　In　addition,　the　influence　of　FeOx　and　elemental　Si　components　on　the　glass-ceramics　process,　and　the　solidification　mechanism　of　glass-ceramics　on　heavy　metals　are　discussed　in　detail.　It　is　found　that　not　only　NMWS　is　suitable　for　the　production　of　high　value-added　products　such　as　iron,　ferrosilicon　alloys　and　glass-ceramics　in　a　cascade　utilization　mode,　but　also　that　these　recycled　or　prepared　products　are　beneficial　to　save　process　energy　consumption　and　reduce　carbon　emissions.　This　work　pays　special　attention　to　the　cascade　utilization,　process　energy　consumption,　and　carbon　emissions　of　NMWS　to　maximize　the　conversion　of　NMWS　into　high-value　products　through　energy-saving　and　emission-reduction　channels.