The invention discloses a mating system selective breeding method for producing a high-quality commercial pig, comprising the following steps: A) taking halothane-free recessive gene Pietrain as a first male parent of a mating system, taking Duroc as a first female parent of the mating system, and hybridizing to obtain Pierre cross-bred pig; and B) selecting the Pierre cross-bred pig as a second male parent of the mating system, taking Shannon No. I pig as a terminal female parent, and hybridizing to obtain the high-quality commercial pig. The average litter size of the pluriparous sows of the mating system terminal female parent of the invention is not less than 12, the growth speed of the high-quality commercial pig is up to above 700 g/d, lean meat percentage is above 62%, feed conversion ratio is not higher than 3.2, intramuscular fat content is not lower than 2.5%, and no PSE meat exists.