Eczema is an inflammation of the superficial dermis and epidermis caused by a variety of internal and external factors. If there is scratching, high-temperature scalding, excessive washing with soap, etc. as well as improper treatment, eczema is likely to spread widely. Eczema clinically acute lesions are dominated by herpes papules, with a tendency to ooze, and the chronic phase is dominated by mossy lesions, which are prone to recurring episodes. Excessive scratching, high-temperature scalding, can cause eczema to spread widely, and cause skin damage and large erythema, and even induce chronic eczema. In addition, if the treatment is not appropriate, it will also make eczema spread widely. Eczema patients should go to the hospital in time, under the guidance of the doctor standardized treatment, to avoid the extensive spread of skin lesions.