AbstractThe habitat，appearance，karyotype，and blood protein locus of Yunnan local chicken breeds are diverse,but no mtDNA polymorphism exists inferred from restriction endonuelease analysis．Due to diferent geological locations and ecologicalcondition，Yunnan local chicken breeds have their unique gene types，relatively independent of other Chinese chicken breeds．The results from blood protein，karyotype and mtDNA demonstrate further that Gallus domesticus originated from Gallus gallus Yunnan is probably one of the original center of Chinese domestic chieken．