The genus Kirinua Li & Lin, 2021 belonging to the family Symphytognathidae was established based on the type species, Kirinua maguai Li & Lin, 2021. A total of three cave-dwelling Kirinua species were recorded from Guangxi, China. In this paper, another new troglobitic spider species from the limestone Jinlong Cave in southern China is described under the name Kirinua jinlong sp. nov. Detailed descriptions, illustrations, and diagnosis are given to this new species, as well as a distribution map for all known species of the genus Kirinua.