Abstract: The single nucleotide polymorphism (SNP) of GH gene was investigated in Zi geese. The primers for intron 3 in GH gene were designed according to the homologous sequence of duck and the SNPs were detected by PCR-SSCP method.The results showed that the length of intron 3 of goose GH gene was about 364 bp, seven SNPs were detected, which were A160G, C167G and T264C, in addition, deletions were found at the base position 176, 177, 231 and 232, respectively, in the two kinds of homozygote. Three kinds of genotypes (AA, AB and BB) were detected and BB genotype was dominant in population, the frequency of genotypes were BB>AB>AA. The results of ChiSquare test indicated that the frequencies of GH gene fit with Hardy-Weinberg equilibrium in Zi geese. The correlation between the genotypes and body weight and carcass traits of Zi geese showed that 7 weeks body weight, 9 weeks body weight, 10 weeks body weight, breast muscle weight, breast muscle rate and heart weight of Zi geese with BB genotype were significantly higher than those with AA genotype (P<0.05), 8 weeks body weight with BB genotype were significantly higher than those with AB genotype (P<0.05). As the whole, the average values of these traits of the individuals with BB genotype were the highest, while those with AA genotype showed the lowest.