Objective:To investigate the genetic polymorphism of15 short tandem repeat(STR)loci(CSF1PO

D13S317

D16S539

D18S51

D19S433

D21S11

D2S1338

D3S1358

D5S818

D7S820

D8S1179

FGA

TH01

TPOXand vWA)in ChongqingTujia population.Methods:DNA samples from 115 Tujia unrelated individuals in Chongqing were screened with the use of AmpFlSTR Identifiler PCR Amplification Kit and ABI310 Analyzer.The relative fragment’s lengths of PCR products were calculated by gene scan analysis software and afterward genotyped by genotype software.Results:All the 15 loci met Hardy-Weinberg equilibrium.The heterozygosity(H)were ranged from 0.6348 to 0.8870.The combined probability of matching(Pm)and power of exclusion(PE)were determined to be 3.12× 10-17 and 0.999 997 688 3.Conclusion:A higher measured value could be obtained for both the combined probability of matching and power of exclusion:The 15 STR loci can meet the needs of the paternity testing and individual identification in forensic medicine.