The invention discloses a lotion for treating hormonous dermatitis. Besides multiple moisturizing effective ingredients, a pseudoalteromonas leavening extract is added to serve as a core of the lotion, is exopolysaccharide extracted from pseudoalteromonas, and can be used for promoting synthesis of I-type, III-type and IV-type collagen, so that the collagen has better quality; the capability of repairing a wound surface can be improved by means of the function of activating immune cells, and the defense capability of the skin system can be improved; because the skin barrier of hormonous dermatitis is destroyed, the collagen binding capability is reduced, the skin barrier is reconstructed by activating resistant cells of the skin, the metabolic cycle is improved, and the skin can quickly metabolize dermatitis to achieve a curing effect. The lotion is reasonable in formula, natural in ingredients, remarkable in curative effect and extremely low in recurrence rate, and can be used for effectively treating flushed face, acne rosacea, serious acne, inflammatory edema, acute pustular eruption and other symptoms caused by hormonous dermatitis, and the hormonous dermatitis can be finally cured.