Abstract: he first-generation （190） and the second-generation （244） were selected as experimental materials from Ⅱ type of new strain Huai pig,and PCR-RFLP methods were used for detecting gene polymorphisms with Hha Ⅰ restriction enzyme sites of IGF-1 gene and Rsa Ⅰ restriction enzyme site of Pit-1,then the correlation between gene polymorphisms and partial performances were analyzed. The results showed that the average daily gain is 3090 kg,with adjust of days old,they attained 90 kg in the first and second generation. By combining two generations,AA genotype of IGF-1 gene had better tendency than AB and BB genotype,but the differences were not significant （P〉0.05） ,meanwhile DD genotype of Pit-1 gene had better tendency than CD and CC genotype,but the differences were not significant （P〉0.05）. After adjusted,their backfat thickness reached 90 kg,but tendency wasn′t inconsistent between the first and second generation. AA genotype of IGF-1 gene,DD genotype of Pit-1 gene was the thinnest combining two generations pigs,the differences were not significant （P〉0.05）. Whether IGF-1 gene and Pit-1 gene could be taken as genetic marker of growth traits to breed new strain Huai pig ,it still needs to be further validated in next generations expanding sample size in Ⅱ type of new strain Huai pig.