Being the highest mountains in central-western China continent, Qinling Mountains are the barrier of the climate both north and south China, are the boundary;ine between two floristic subregions of Sion-Japanese and Sino-Himalayas, and the interlating district of three floristic provinces of North, Central, and Southwest China. Thus, there are flourish plants and various fungi, especially polypores fungi living with the wood. In the past, few mycologist or botanist made thorongh investigation on polypores fungi in Qinling Mts.About 142 species of polypores fungi belonging 65 genera were described by the author based on collections made by author and his colleagues in 2001-2004 from Taibai mountain, Huangbaiyuan, Foping, Ningshan, Shiquan, Hanyin, Nanwutai Mt., Zhouzhi, Baoji, Xinja Mt. and so on in Qinling Mountains. In these polypores fungi, 5 species are described as new: Cyclomyces cylindrospora M.Q.Zhu & Zh.M.Cao, Inonotus armatus M. Q. Zhu & Zh. M. Cao, Irpex microsporum M.Q.Zhu & Zh.M.Cao, Steccherinum dealbatum M. Q. Zhu & Zh. M.Cao, Trametes subsuaveolens M. Q. Zhu & Zh. M.Cao, and 2 species are new combination: Antrodiella membranacens (Sw.) M.Q.Zhu & Zh. M. Cao, Fomes nigrescens (L.) M.Q.Zhu & Zh. M. Cao, 1 genera is new record for China: Fibroporia Parmasto, 13 species are new records for China: Coltricia cinnamomea (Jacq.) Murrill, Coriolopsis byrsina (Mont.) Ryvarden, Coriolopsis floccosa (Jungh.) Ryvarden, Dendrothele macrospora (Bres.) P.A. Lemke, Dendrothele pachysterigmata (H.S. Jacks. & P.A. Lemke) P.A. Lemke, Fibroporia radiculosa (Peck) Parmasto, Inonotus hamusetulus Ryv., Peniophora incarnata (Pers.) P. Karst, Peniophora lilacea Bourdot & Galzin, Phellinus melleoporus (Murrill) Ryvarden, Trametes maxima (Mont.) A. David & Rajchenb., Trametes subectypus (Murrill) Gilb. & Ryvarden, Tyromyces leucomallus (Berk. & M.A. Curtis) Murrill.All specimens examined are deposited in the HMUABO (Herbarium of Mycology, Northwest A & F University) and Herbarium of Mycology on Forestry College.The result of the flora diversity study indicated that there were rich fungal flora in the Qinling Mountains. For genera, Cosmopolitan elements are the main characteristics in Qinling Mountains (58.46%), Secondly pantropical element (16.92%) and North Temperate element (15.38%). Regarding the ecomposition, the species are grouped into 8 geographical elements: Cosmopolitan (28.17%), North Temperate Zone (30.99%) , Temperate-subtropical or Tropical (5.63%) ,Eastern Asia-North America (12.68%) ,EasternAsia (2.82%) ,Sino-in common (3.52%) and endemic (4.93%) .In all eight distribution types Cosmopolitan and North Temperate Zone are characteristics of this region. The fungal flora of Qinling is very similar to that of Japan and Korea. This suggests that the origins of these two floras may have a certain relationship.