The M genomic segment of 30 strains of Hantavirus (HV) isolated from different areas in Hubei province was analyzed to understand the genetic characteristics and the genomic function of hantavirus (HV) in Hubei province.According to Genebank software of HV, the type-specific primers were designed corresponding to the conserved sequences in the G1 region of M genomic segment of HV.Heminested RT-PCR and restriction mapping methods were applied to type and digest 30 strains of HV isolated from different areas in Hubei province.Thirty strains isolated from different areas in Hubei province were typed as 21 HTNV and 9 SEOV, resp.The restriction mappings of 21 isolates digested by Hinf I and HaeIII were consistent with those of 76/118 standard strain, but it was different from those of H-114 strain, of which digested by both HaeIII in only one segment in Wuhan and Honghu City and Hinf I in three segments in Yingcheng, Jianxia, Huangpi, and Macheng city, resp.Then all HTNV were digested by Hinc II except the above strain in Yingoheng city.In addition, 9 isolates were digested by Hinf I in two segments or EcoRI in two segments while not being digested by Hae III, which were not consistent with those of R22 strain.Hubei province was an mixed epidemic areas of HFRS; the M genomic segment of SEOV was stable, but that of HTNV no stability; and distinct hantaviruses could coexist in either different or the same geog. or ecol. sores in Hubei province.