In this study, a test for the immunity control effect by ethanolic extract of Eurya emarginata (EE-70E) on NC/Nga mice as the models for atopic dermatitis was conducted with the following results. Atopic dermatitis in NC/Nga mice was induced by repeated application of 1-chloro-2,4-dinitrobenzene (DNCB) for 5 weeks. Mice were orally administered EE-70E or terfenadine, positive control for 3 weeks. Scratching behavior, clinical skin severity, and the levels of IL-4, L-13, IL-17, total serum IgG1, and total serum IgE were measured. The oral administration with EE-70E doses of 200 or 400 mg/kg significantly decreased scratching behavior scores and clinical skin severity score in a dose-dependent manner (p<0.05). The administration of EE-70E at 400 mg/kg significantly decreased cytokines within the blood serum, that is, IL-4, L-13, and IL-17 compared to the control group (p<0.05). The level of blood histamine was statistically significantly decreased. Administration of EE-70E at 400 mg/kg significantly decreased the levels of total serum IgE (p<0.05). The above results indicated that EE-70E was effective in improving the symptoms of atopic dermatitis through various immunity control mechanisms.