The odd-scaled snake genus Achalinus, widely distributed in northern Vietnam, China, and Japan, is a group of snakes with relatively deficient data. A. dabieshanensis Zhang, Liu, Huang and Zhang, 2023 was first described based on three specimens and is currently known to be found only in Anhui Province, China. During our recent herpetological surveys, an Achalinus specimen (collection number LFR2024132) was collected from Wuning County, Jiangxi Province, China (29°23′21″ N, 114°39′45″ E, 1 470 m a. s. l.). Morphological characteristics of this specimen were examined and measured in calibrated scale (Deli, 0﹣300 mm, accurate to 1 mm) and Stainless steel digital calipers (German Minat, 0﹣150 mm, accurate to 0.01 mm) to primarily identify this specimen, then maximum likelihood tree was constructed using DNAStar, MEGA X, IQ-TREE 1.6.12, and uncorrected p-distance was calculated using MEGA X, based on mitochondrial COI genes, to confirm the species delimitation. The specimen was a subadult female with the following morphological characteristics:(1) dorsal scales strongly keeled, 23 rows throughout the body, the outmost row smooth and significantly enlarged; (2) tail relatively short, the ratio of tail length to total length 0.16; (3) length of suture between internasals shorter than that between prefrontals; (4) supralabials 6, the 4thand 5th in contact with the eye; (5) infralabials 5, first three in contact with anterior chin shields; (6) ventrals 159, subcaudals 44, not paired. Molecular data revealed that the specimen from Wuning County clustered with the type series of A. dabieshanensis, with low intraspecific genetic divergence (0.9%﹣1.3%, Appendix 1). The result of morphological and phylogenetic relationships indicates that A. dabieshanensis represents a new snake record for Jiangxi Province (Figs. 1﹣4, Tables 1﹣3, Appendix 1). This study indicates that A. dabieshanensis represents a new snake record for Jiangxi Province, bringing the total number of Achalinus species recorded in this province to four, and further enriching the reptile diversity of Jiangxi Province. It is recommended that the investigation and research of this species be continuously strengthened, especially in the adjacent areas of known distribution, such as southeastern Hubei Province and northeastern Hunan Province.