An innovative therapy of various dermatitis such as atopic dermatitis can be attained by antibacterial, antiviral, antiallergic, antiphlogistic, blood-circulation accelerating, antifungal, sterilizing, anti-itching actions by the above respective ingredients, accelerating action for permeation of pharmacologically active ingredients to deep region of skin by Cnidii Rhizoma and Japanese Angelicae Root, accelerating action for keratinization in the diseased part by salicylic acid and resorcinol.