Abstract: Both nongenetic factors and genetic factors have effect on the quality of pig meat traits.The former consists of multiple factors such as raising conditions,transport，slaughter and so on.The latter is an important factor in meat quality，which mainly consists of the major gene MI gene that control the deposition of intramuscularly fat，candidate gene，heartfatty acid binding protein gene and adipocyte fatty acid binding protein gene.MyoD gene family is another important factor in meat quality.In addition，there are halothane gene，rendement napole gene et al.The genetic factor which influences meat quality of pigs will be summarized in this article.

Key words: pig meat quality; genetic factors