A Gram-negative and rod-shape bacterium designated REN9^T, was isolated from pit mud of Baijiu in Sichuan, China. The 16S rRNA sequence of strain REN9^T had a high similarity to Pseudoxanthomonas indica P15^T (99.21%), P. mexicana AMX 26B^T (97.74%) and P. japonensis 12-3^T (97.43%). Phylogenetic analysis showed that REN9^T belongs to the genus Pseudoxanthomonas and formed distinct cluster. The ANI and DDH values between strains REN9^T and P15^T were 80.94% and 24%, respectively. Strain REN9^T grew optimally at 37 °C, pH 7.0 and 2% NaCl. PE (phosphatidylethanolamine), PG (phosphatidylglycerol) and DPG (diphosphatidylglycerol) were the major polar lipids of REN9^T. Ubiquinone 8 (Q-8) was the predominant quinone, and Iso-C_15:0 (64.32%), anteiso-C_15:0 (12.04%) and Iso-C_14:0 (4.56%) were the majority fatty acids. The DNA G + C content of strain REN9^T was 67.3 mol%. Genomic analysis showed that strain REN9^T had two secondary metabolite biosynthesis gene clusters. Moreover, strain REN9^T had 43 glycoside hydrolases, 41 glycosyl transferases and 41 carbohydrate esterases. Based on the polyphasic taxonomic analysis, strain REN9^T is recommended as a novel species within the genus Pseudoxanthomonas, for which the name Pseudoxanthomonas beigongshangi is proposed. The type stain is REN9^T (= JCM 33961^T = GDMCC 1.2210^T).