Erythrodermic psoriasis is an erythrodermic type of psoriasis in which the red skin usually fades when cured. When erythrodermic psoriasis is cured, the skin is the same as normal. The cause of psoriasis is not yet clear, it may be caused by a combination of genetic and environmental factors, etc. Erythrodermic psoriasis is one of the types of psoriasis, which manifests itself as diffuse redness of the skin all over the body, infiltrated and swollen with a large number of furfuraceous scales, between which may be patches of normal skin (islands of skin), which may be accompanied with systemic symptoms such as fever, swelling of superficial lymph nodes, etc. The disease is mainly treated by medication, such as the use of a combination of drugs and medicines, which can be used to treat the disease. The disease is mainly treated by medication, such as the use of Avian A, methotrexate, cyclosporine and other drugs, the use of drugs can not be self-operation, but to follow the doctor’s instructions. Erythrodermic psoriasis can be cured, but it will recur, so it needs long-term treatment, and after the cure, we should pay attention to the prevention of recurrence, the diet should be as light as possible, eat more fresh fruits and vegetables, to ensure enough sleep, do not stay up late, once the recurrence of the disease should actively cooperate with the treatment.