Erythrodermic psoriasis belongs to one of the types of psoriasis. At present, psoriasis can not be cured, but the symptoms can be relieved through standardized treatment. Erythrodermic psoriasis, the specific cause of which is unknown, often manifests itself as a generalized redness and swelling of the skin, accompanied by a large number of furfuraceous scales, itching, fever and other discomforts. The disease cannot be cured at present, and the purpose of treatment is to control the condition, relieve symptoms and reduce recurrence. The treatment is based on medication. Topical medication is the first choice of treatment, commonly used glucocorticoids, such as dexamethasone, betamethasone and so on. Calcium-modulated phosphatase inhibitors, such as tacrolimus and pimecrolimus, can also be used in combination to improve the efficacy. Systemic medications are commonly used as immunosuppressants, such as methotrexate, cyclosporine, and leflunomide. Biological agents can also be used for moderate to severe psoriasis where conventional systemic therapy is ineffective or poorly tolerated, such as infliximab and adalimumab. Physical therapy such as photochemotherapy (PUVA), UVB phototherapy (especially narrow-spectrum UVB), 308nm excimer laser, and bath therapy can be applied. There are individual differences in specific treatments, and you should consult your doctor when using medication.