Two novel Gram-positive bacteria, designated strains REN8Tand REN14T, were isolated frombaijiupit mud in Sichuan Province, China. REN8Tachieved the best growth at 37°C, a pH of 8.0, and a NaCl concentration of 2%, while REN14Tdisplayed optimal growth at 37°C, a pH of 6.0, and a NaCl concentration of 1%. 16S rRNA and genomic phylogenetic analysis showed that REN8Tand REN14Twere clustered with the genusPlanococcus. The genomic DNA G + C contents of REN8Tand REN14Twere 46.7 and 45.1 mol%, respectively. The dDDH and ANI values were 24.5 and 80.43% between REN8TandP. salinarum(the most closely related type strain) and 25.1 and 82.42% between REN14TandP. soli(the most closely related type strain). Genomic analysis showed that several carbohydrate-active enzymes and secondary metabolite gene clusters existed in REN8Tand REN14T. Chemotaxonomic characteristics of REN8Tand REN14Tincluded major fatty acids, predominant menaquinones, and polar lipids, all of which were consistent with the genusPlanococcus. Based on the polyphasic taxonomic method, these two strains represent two novel species of the genusPlanococcus; the namePlanococcus beigongshangisp. nov. is proposed for the type strain REN8T(=JCM 33964T= GDMCC 1.2213T), and the namePlanococcus beijingensissp. nov. is proposed for the type strain REN14T(=JCM 34410T= GDMCC 1.2209T). The addition of REN8Tand REN14Tmight improve the quality ofhuangjiuby considerably increasing the amino acid nitrogen content and acidity and decreasing the bioamine content, with no significant change in alcohol content.