Abstract: In order to determine the difference of combining ability between different terminal sires and three line sows, two commonly used terminal sires S121 and S122 from Wens Group were mated to W352 sows, the mating effects of five-line pigs from different terminal sires were compared to select the appropriate terminal sire through two repeated tests of combining ability. WS501 hybrid pig had advantages in body length, growth rate, feed/gain ratio, meat color, marbling and big market weight compared with WS502 hybrid pig. The results showed that WS501 hybrid pig had long and tall body length, small head, wide back, compact muscle, good abdomen and group uniformity. Feeding WS501 hybrid pig has the better economic value.