Abstract: With the well- developed Wufengian strata and transitional position between the Yangzi and Jiangnan Stratigraphic regions, the Xiushui gorge of the Jiangxi province has been regarded as one of the most important districts for the research of Wufengian graptolitic biostratigraphy in south China. In this paper, the Wufeng strata in the vicinity of the Guantangyuan village, Wuning county are restudied with some revisions of the definition and biozonation of the Wufeng Formation. The Xinling Formation and the Wufeng Formation previously used in this district are now incorperated into one Formation, i.e. the Wufeng Formation, in which the Paraorthograptus uniformis zone is canceled and the Dicellograptus szechuanensis zone is replaced by the Dicellograptus complexus zone. Consequently, the graptolitic sequence after these revisions in the Wufeng Formation of Xiushui gorge could be arranged as follows with an ascending order: the Dicellograptus complexus zone, the Tangyagraptus typicus zone and the Diceratograptus mirus zone.