It is traditionally regarded that the Wudang Mountain is the Precambrian basement of South Qinling Orogeny and mainly composed of Neoproterozoic Wudang Group, Yaolinghe Group, regionally developed Doushantuo Formation. Field investigation indicates that the rock unit of the HuanglongFangtan area, which is different from widely distributed Precambrian orderly sequence, has the typical feature of “block in matrix” structure. Further study of microfossil and zircon isotopic geochronology indicates that the metaquartz sandstone of formerly determined Doushantuo Formation occurs as slate, from which 15 species and more than 30 kinds of late Devonian sporopollen fossils were separated and identified. Tuffaceous sandstone, which was formerly determined as the Yaolinghe Group and occurs as schist, yielded a single weighted peak age of 382 Ma. And detrital zircon analysis suggests that provenance is dominated by late Devonian magmatic rocks, with minor from the developed Wudang Group and Yaolinghe Group. The discovery of Late Paleozoic sediments assemblage and volcanic active materials in the formerly named Precambrian rock unit in the HuanglongFangtan area provides the basic information for reunderstanding the material composition of Wudang Mountain. NeoproterozoicMesozoic zircon dating data obtained for basalt, mable, diabase and sandstone matrix, along with field investigation for structural sections, suggest that lithological units in the HuanglongFangtan area in Shiyang are not Precambrian orderly structuralsedimentary layer but a mélange belt.