In China, there are many pig breeds and economic crossbreeding combinations, and the feeding conditions in different regions are quite different, so the suitable market weight of fattening pigs is also quite different. Some local early-maturing pigs and their hybrid pigs slaughter about 75 ~ 85 kg; Binary hybrid pig, which is made by crossing lean boar with domestic or local sow, is suitable for marketing and weighs 85-90 kg; The suitable market weight of three-way hybrid pigs with two lean-type improved pigs as male parents and 1 local breed as female parents is 90 ~100 kg; However, the suitable market weight of the three-way hybrid pigs crossed by three excellent lean-type breeds is 100 ~ 1 15 kg.