Abstract: In this experiment,the reproductive performance of Yorkshire-songliao black originating from crossing generation between female Songliao black pig and male Yorkshire was carried out,and the growth performance,the carcass quality and the meat quality of finishing pigs which was the filial generation of the commercial strains were also determined. The results indicated that the reproductive performance of the commercial strains was inferior to that of Songliao black pig,but it was better than that of Yorkshire; The commercial strains in the performance trait was better than that of Songliao black pig,and equal to that of Yorkshire; The commercial strains in the carcass quality was equal to that of Songliao black pig and Yorkshire; The commercial strains in the meat quality was no better than that of Songliao black pig,but it also reached the level of the high quality pork. This result indicated that commercial strains of Yorkshiresongliao black pig was a new line which has a certain potential and is worth being cultivated.