Essential oil-excluded Artemisia princeps Pamp var Ssajuarissuk (AP) was fermented with Lactobacillus brevis K-1, which was isolated from cabbage Kimchi, and the anti-inflammatory effects of AP and fermented AP (FAP) on lipopolysaccharide (LPS)-induced inflammatory response in peritoneal macrophages were investigated. AP and FAP inhibited LPS-induced TNF-$alpha$, IL-$1{eta}$, COX-2, iNOS and COX-2 expression, as well as NF-${kappa}B$ activation. AP and FAP also reduced ear thickness, inflammatory cytokine (TNF-$alpha$, IL-$1{eta}$ and IL-6) expression and NF-${kappa}B$ activation with 12-O-tetradecanoylphorbol-13-acetate (TPA) induced dermatitis in mice. Furthermore, AP and FAP also reduced exudate volume, cell number, protein amount, inflammatory cytokines (TNF-$alpha$, IL-$1{eta}$ and IL-6) expression and NF-${kappa}B$ activation in carrageenan-induced air pouch inflammation in mice. The inhibitory effects of FAP were more potent than those of non-fermented AP. Based on these findings, we propose that FAP can improve inflammatory diseases, such as dermatitis, by inhibiting the NF-${kappa}B$ pathway.