Eczema is an inflammatory skin reaction with a pronounced tendency to exude caused by a variety of internal and external factors. In the acute phase, the clinical lesions are predominantly herpetic with a tendency to exude. In chronic eczema, patients have infiltrates and thickened skin, intense itching, and easy recurrence of lesions. The etiology of eczema is unknown and may be related to internal factors (allergies, genetics, mental stress, insomnia, overexertion, chronic digestive diseases, gastrointestinal dysfunction, emotional changes, etc.) and external factors (food, inhalants, living environment, animal fur, various chemical substances, etc.). According to the course of the disease and clinical characteristics can be divided into acute, subacute and chronic eczema: Acute eczema: it occurs in the face and ears, hands, feet, forearms, lower legs and other exposed areas, and in severe cases can diffuse the whole body, often symmetrically distributed. Sub-acute eczema: developed as a result of acute eczema with reduced inflammation or longer duration after inappropriate treatment. It is manifested as a reduction in redness and exudation, but there can still be papules and a small amount of papules, the skin is dark red, there can be a little scaling and mild infiltration, still conscious of intense itching. Chronic eczema: from acute eczema and subacute eczema, but also due to mild irritation, persistent and chronic at the beginning. It occurs on the hands, feet, calves, elbow fossa, femur, breast, vulva and anus, and is mostly symmetrical in onset. Eczema is usually treated with systemic medication and topical medication. During this period, attention should be paid to avoiding all suspected causative factors, avoiding spicy foods and alcohol during the onset of the disease, and avoiding excessive washing and scalding.