Abstract: One set of the volcanic rocks exposes in the Zhifangdong area, Xinjiang, but its formation age is poorly constrained and its stratigraphic unit division is also controversial. In this paper, LA-ICP-MS zircon U-Pb dating yielded an age of 3037±39 Ma for the volcanic rocks, suggesting that the rocks formed in Late Carboniferous. The volcanic-sedimentary rock unit unconformably overlies on the Early Carboniferous Tiaoshan Group (C1T) and／or Jiangbasitao Formation (C1j), both of which are unconformably overlain by the Early Jurassic Badaowan Formation (J1b). Late Carboniferous fossils, Calamites undulates sterkerg., was found to occur in this volcanic-sedimentary sequence. The sequences are mainly composed of terrigenous clastic rocks, with minor andesite porphyries and andesite brecciated tuffs. In contrast, the Batamayineishan Formation is characterized by widespread Early Carboniferous mafic volcanic rocks, with minor amount of terrigenous clastic rocks. The volcanic rocks are evidently different from that of the Batamayineishan Formation in lithology, eruption features and formation time. Therefore, the volcanic rocks should be re-classified into Late Carboniferous Aoertu Formation (C2o).