The present invention relates to novel Leuconostoc citreum WiKim0104 isolated from Kimchi and a composition comprising the same or its use. The present invention provides a method for prevention, improvement and treatment of inflammation, obesity or fatty liver disease of a subject by administering the novel Leuconostoc citreum WiKim0104 isolated from Kimchi or a composition comprising thereof. The Leuconostoc citreum WiKim0104 according to the present invention shows an inhibitory effect for fatty liver production by inhibiting fat accumulation in liver cells and reducing expression of fatty liver-related genes, and thus it may be variously utilized for uses in prevention, improvement and treatment of inflammation, obesity or fatty liver disease.