Eczema is an inflammation of the superficial dermis and epidermis caused by a variety of internal and external factors. Eczema on the back of the hand clinically in the acute stage of the skin lesions are mainly herpes papules, there is a tendency to ooze, the chronic stage of the moss-like changes, easy to recurring episodes. Eczema on the back of the hand in the acute stage is often manifested as erythema on the basis of the needle tip to corn grain size papules, papules, severe cases can appear small blisters, often fused into a piece, the boundary is not clear, the lesions around the pimple gradually sparse, often due to scratching to form a punctate vesicular surface, there is a clear plasma exudate. Self-conscious itching is intense, scratching, hot water washing can aggravate the lesions. Subacute eczema on the back of the hand due to acute eczema inflammation is reduced or inappropriate treatment after a long period of development. The performance of redness, swelling and oozing is reduced, but there can still be papules and a small number of papules, the skin lesions are dark red, there can be a few scales and mild infiltration. There may be a little scaling and mild infiltration. There is still intense itching. Chronic eczema on the back of the hand is characterized by papules, scratches and scales on the infiltrated dark red patches of the affected skin, local skin thickening, surface roughness, with varying degrees of erythroplasia, hyperpigmentation or hypopigmentation. Still conscious of intense itching. When pimples, erythema, itching on the back of the hand, should promptly consult the doctor to find out the cause of the disease, and actively cooperate with the doctor’s treatment, the patient must not blindly self-medication, so as to avoid ineffective treatment and delay the condition.