The phenomenon of erythema peeling caused on the body is not a few in daily life. In clinical dermatology there are many reasons that cause erythema peeling on the body, often seen mainly in the following diseases: 1. Erythrodermic disease. Such as psoriasis due to non-standard treatment or long-term non-treatment, the formation of erythrodermic type of psoriasis, there will be erythema and desquamation of the whole body, possibly accompanied by hypoproteinemia. 2, solar dermatitis. The patient is allergic to sunlight, and after ultraviolet radiation, there will be flaking and erythema all over the body, and in severe cases, edema will appear. 3. generalized eczema. This is an allergic dermatitis that occurs when there is an inflammatory reaction. 4. Because of exposure to certain chemical substances or new allergic substances, it can cause erythema and papules with flaking all over the body.