An unidentified snake was collected at a freshly reclaimed hillside in Qianwanguan Township, Leibo County, Sichuan Province (103°50′ E, 28°15′ N) during a reptile diversity survey in Sichuan Province in late July 2020. We conducted Bayesian and maximum likelihood phylogenetic analyses basis on a mitochondrial cytochrome b (Cyt b) DNA sequence to ascertain the phylogenetic position of this specimen (p-distance ≥ 3.6%). Furthermore, the newly specimen can be diagnosed as Psammodynastes pulverulentus by a combination of pholidosis characters, which is the new snakes fauna in Sichuan Province. On the basis of 17 individuals of P. pulverulentus from Sichuan, Guangxi, Guangdong, Yunnan, Hainan and Namibia, we recognize for the first time a complex intraspecific phylogeny of P. pulverulentus, and to better solve this issue, more detailed samples and more markers are needed.