The Taiwanese gray shrew (Crocidura tanakae) and Asian gray shrew (C. attenuata) are so similar in size and morphology that the taxonomic status of the former has changed several times since its description;C. tanakaehas also been regarded as an endemic species of Taiwan Island. In recent years, molecular identification has led to several reports ofC. tanakaebeing distributed in the mainland of China. In this study, we determine the geographical distribution ofC. attenuataandC. tanakaebased on more than one hundred specimens collected during 2000 to 2018 over a wide area covering the traditional ranges of the two species in the mainland of China, and show a substantial revision of their distributions. Among 110 individuals, 33C. attenuataand 77C. tanakaewere identified byCytbgene and morphologies. Our results show, (1)C. attenuataandC. tanakaeare distributed sympatrically in the mainland of China; (2) contrary to the previous reports, the distribution range ofC. attenuatais restricted and much smaller than that ofC. tanakaein the mainland of China; (3) Hainan Island, like Taiwan Island, is inhabited byC. tanakaeonly according to the present data.