Using PCR product direct sequencing,mitochondrial control region(CR) sequences of 10 individuals of Myotis macrodactylus were analyzed for the first time.The CR sequences of M.macrodactylus,as in other mammals,could be subdivided into a central conserved domain(CD,including five boxes:F,E,D,C and B) and two flanking variable domains:extended termination associated sequences(ETAS,including two conserved elements:ETAS1 and ETAS2) and conserved sequences blocks(CSB,including three conserved elements:CSB1,CSB2 and CSB3).The CD was the most conserved domain with the nucleotide variance rate of 1.8%.Because of the repeated sequences which were different in base composition,copy number and arrange type,the CR sequences showed notable length polymorphism(1 778-2 048 bp).In the ETAS,the short sequence TACAT and its reverse complementary sequence were found seven times,supporting the slipped mispairing model.This paper has provided basic genetic data for further study and protection of M.macrodactylus.