Eczema is an inflammatory disease of the skin with polymorphic lesions and a tendency to extend due to a variety of complex internal and external factors. The cause is complex and the condition is easily recurrent and can be prolonged for many years. The main symptom is intense itching. In addition, the most important thing in the treatment of eczema patients is to find the cause of the onset or triggering aggravation as much as possible, such as the work environment, living habits, thoughts and emotions, etc. Allergen testing can be done when conditions permit, such as intra-skin prick test or skin patch test, as well as the detection of specific IgE antibodies in the blood to detect suspected allergens. Eczema is divided into: Acute eczema: most of them are dominated by papules and papules, with obvious punctate or small patchy vesicles, oozing and crusting. The damage is ill-defined and can appear as pustules, purulent exudates and crusts when combined with infection. These diseases are treated mainly with drugs to control exudation, 2-3% boric acid solution or saline and other wet compresses for 30-60 min each time, 2-4 times a day, between wet compresses can use oxidative paste, etc. After the lesions dry, glucocorticoids or calcium phosphatase inhibitor creams can be used. Sub-acute eczema: usually have an acute phase of treatment is not timely migration, mostly erythema, papules, scaling, exudation significantly reduced. This period can choose paste, or glucocorticoid cream, 2-3 times a day; chronic eczema: lesions are mostly dark red or brownish-red patches, often fused and thickened with mossy changes, the surface can be present scales, scratches or blood crusts, etc., around which can be scattered similar rashes. Chronic dermatitis can flare up acutely under certain triggers. Glucocorticoid creams with good permeability or encapsulation can be chosen to increase its efficacy. Many patients come to the clinic specifically for allergen testing. It is worth mentioning that no test is foolproof and more than half of the patients do not find any cause. All expectations should not be pinned on this. It is still important for patients to avoid external stimuli, such as hot water (many patients feel comfortable after hot water, not knowing that the itching is reduced at that time, but the disease will be aggravated afterwards), violent scratching, etc. Try to wear cotton clothing, and avoid allergy-prone food and irritating food. Here to mention a point, many patients are most likely to ask my question is what can I eat and do I need to avoid eating? In fact, doctors can only give you some range, for example, in a large sample survey found that: seafood, chili peppers, beef and mutton, spirits, etc. tend to aggravate the disease, but does not mean that it can necessarily aggravate your own disease, my advice is generally to observe yourself, if eaten okay, can be consumed. This is also some doctors tell patients this can not eat, that can not eat, patients can only eat boiled cabbage every day, but the disease should be committed when or aggravated, in fact, this is a misconception. Keep your skin clean, prevent skin infections, avoid overworking, and keep an optimistic and stable mood is the most important thing.