Dermatomyositis general recovery in a few years can not be generalized, some patients can be controlled in a few weeks, and most of them can be gradually recovered in about 2~3 years. The etiology of dermatomyositis is not yet clear, it is a non-purulent inflammatory disease mainly characterized by transverse myelopathy, the typical clinical manifestations of which are symmetrical muscle weakness, pain, tenderness, etc., as well as atopic dermatitis, erythema of the eyelids, and other skin damage. At present, there is no complete cure for dermatomyositis, which is mainly treated by glucocorticosteroids such as prednisone, together with immunosuppressants such as methotrexate and cyclophosphamide. Through standardized treatment, the condition can be effectively controlled. If treated early, some patients can be controlled within a few weeks, and most patients can recover gradually in 2~3 years. After the appearance of dermatomyositis manifestations, it is recommended to go to the hospital in time, under the guidance of the doctor for treatment.