PURPOSE: A composition for treating atopic dermatitis is provided to apparently treat atopic dermatitis and to manufacture pharmaceutical products, food products, or cosmetic products. CONSTITUTION: A composition for treating atopic dermatitis contains fermentations which are prepared by lactic acid bacteria from one or more ingredients among Citrus unshiu peel, Ecklonia cava, and rice bran. The lactic acid bacteria are prepared by mixing Raphanus sativus powder, salts, sugar, and water, and naturally culturing. The composition further contains soybean powder and green tea powder.본 발명은 아토피성 피부염 개선제 조성물을 개시한다. 구체적으로 진피, 감태 및/또는 쌀겨의 유산균에 의한 발효물을 유효성분으로 포함하는 아토피성 피부염 개선제 조성물을 개시한다.