The end-Permian mass extinction (EPME) was the most severe biotic crisis in the Earth's history, with significant losses of marine species. High-resolution analysis of trace fossils from the Meishan section, South China, reveals a diverse ichnofauna, including Arenicolites isp., Balanoglossites triadicus, Chondrites intricatus, Diplocraterion parallelum, Palaeophycus isp., Phycosiphon incertum, Planolites isp., Rhizocorallium commune, Siphonichnus opthalmoides, Skolithos linearis, Teichichnus rectus, Thalassinoides isp., Zoophycos isp. and other bioturbation structures. The amount of bioturbation (AB) and ichnoassemblages in the Meishan section provide valuable clues to record the palaeoceanic redox conditions across the Permian-Triassic transition. During the Changhsingian Stage (Beds 2-24d), the alternation of two distinct ichnotypes in this interval reflects dynamic redox conditions, indicating episodic oxygenation of bottom waters. In the key interval from Beds 24e-27 across the EPME, conditions predominantly remained oxygenated in the lower part of Bed 24e and Bed 27, as indicated by intense bioturbation (AB = 60-80 %). However, oxic conditions were abruptly disturbed by anoxia/dysoxia at the top of Bed 24e and Bed 26, as evidenced by a marked decrease in bioturbation intensity (AB = 0-20 %), and the dominance of small-sized Chondrites. Notably, anoxic conditions occurred at the uppermost part of Bed 24e just below the EPME horizon at Bed 25 of the Meishan section. The amount of bioturbation decreased to consistently low values in Beds 28-30 (AB = 0-20 %), probably indicating prolonged environmental stress and sustained low oxygenation in the aftermath of EPME. Additionally, a comprehensive analysis of ichnological records from South China suggests that such oxygenation fluctuation may be widely prevalent during the Changhsingian.