Sixty wood-decaying fungi were identified from materials collected from four field trips in the Qingcheng Mts., Sichuan Province, southwestern China. A checklist of these species is supplied and the host tree or substrate of each species is listed. Most of the species are reported for the first time in the studied area. Antrodia subxantha Y.C. Dai & X.S. He (Polyporales, Basidiomycota) is described as new. It is characterized by resupinate basidiocarps, yellow pore surface, generative hyphae dominant in tube trama, cylindrical to oblong-ellipsoid basidiospores (3－4×1.6－2.1μm). It is very similar to Antrodia xantha in macromorphology, but the latter has allantoid basidiospores (4－5×1.2－1.5μm), and its trama is dominated by skeletal hyphae.