The experiment aims to discuss the effects of different slaughter weights on the slaughter performance and carcass quality of ternary hybrid pigs(Duroc×Landrace×Large white).Select castrated male pigs from the same feeding environment and divide them into 4 groups based on slaughter weight of 110 kg(G1 group),125 kg(G2 group),140 kg(G3 group),and 150 kg(G4 group),totaling 16 pigs.The results showed that:1)Slaughtering performance:The straight length,diagonal length of carcass,and head weight of the G4 group were significantly higher than those of the G1 group(P<0.05);The backfat thickness of G3 group was significantly higher than that of G1 group and G4 group(P<0.05);The plate oil weight of G3 and G4 groups was significantly higher than that of G1 and G2(P<0.05);There was no significant impact on other indicators(P>0.05).2)Carcass quality:The G3 group had significantly higher meat color scores(German,American)and marble texture scores than the other three groups(P<0.05);The drip loss of G4 group was significantly higher than that of G1 group(P<0.05);The tenderness of G2 group was significantly higher than that of G4 group(P<0.05).Overall,there are significant differences in slaughter indicators and carcass quality among ternary hybrid pigs with slaughter weights ranging from 110 to 150 kg.A slaughter weight of 140-150 kg has a positive impact on meat color,texture,and appearance,but 150 kg in-creases drip loss;125 kg may perform better in terms of tenderness.The appropriate slaughter weight is 125-140 kg.