Abstract: The niche breadths and overlaps of 13 dominant populations in tree layer and 16 dominant populations in shrub layer of Cerasus clarofolia community in Huangshan Mountain scenic areas were measured using the formulas described by Levins, Hurlbert and Horn. The results showed that in the tree layer, niche breadths of C.clarofolia and Symplocos paniculata were broader than other species, with Levins(B_i)and Hurlbert’s(B_a)values being 0.942, 0.884 and 0.939, 0.730, respectively, but that of Quercus stewardii, Pinus taiwanensis and Pterostyrax corymbosus were narrower. Forty-seven species counterparts, accounting for 60.3% of the total, had niche overlap values smaller than 0.5; twenty-eight species counterparts, accounting for 35.9%, had niche overlap values larger than 0.5, and 3 species counterparts had no niche overlap. In shrub layer, young tree of S. paniculata, Hydrangea angustipetala and Stephanandra chinensis had broder niche breadths, and their B_i and B_a values were 0.872, 0.862, 0.799, 0.742 and 0.689, 0.587, respectively, while Morus australis, Maddenia incisoserrata and Kerria japonica had narrower niche breadths. Sixty-seven species counterparts, accounting for 55.8% of the total, had niche overlap values smaller than 0.5; Forty-eight species counterparts, accounting for 40.0%, had niche overlap values larger than 0.5, and 5 species counterparts had no niche overlap. Those species with broader niche breadths were dominant or accompanying species, and had high adaptability to community microclimate characteristics. The niche overlaps among the species with the same or similar environment requirements and similar biological properties were greater, and it is possible for the species with narrower niche breadths to overlap more.