The　short　tandem　repeat　(STR)　is　one　of　the　most　widely　used　genetic　makers　in　forensic　DNA　labs　worldwide.　In　the　present　study,　we　investigated　the　genetic　structure　of　19　autosomal　STRs　and　1　sex-determining　locus　(amelogenin)　in　the　Xibe　ethnic　group　in　China,　as　well　as　its　relationships　to　other　groups.　One　hundred　and　ninety-five　alleles　were　detected　in　222　unrelated　healthy　Xibe　individuals.　The　values　of　combined　power　of　discrimination　and　probability　of　exclusion　of　all　19　STR　loci　were　0.99999999999999999999996912　and　0.999999997538,　respectively.　Principal　component　analysis　revealed　relationships　between　the　Xibe　group　and　other　groups,　which　showed　a　relatively　close　genetic　relationship　between　the　Xibe　and　Korean　groups.