Dermatomyositis caused by immunity disorder can be treated with general treatment, glucocorticoid such as methylprednisolone treatment, immunosuppressant such as cyclophosphamide, other treatments, and skin lesion treatment. 1. General treatment: pay attention to bed rest in acute period, avoid direct sunlight, avoid infection, strengthen nutrition, and actively treat the primary disease. 2. Glucocorticoid: use non-fluorinated hormone, choose the appropriate dose according to the severity of the disease, and use methylprednisolone for shock treatment in critical cases. 3. Immunosuppressants: cyclophosphamide, azathioprine, methotrexate, etc. can be used appropriately, combined with hormones or used alone. 4. Other treatments: biological agents can also be used in the treatment of dermatomyositis, anabolic agents such as nandrolone phenylpropionate can restore a certain muscle tone, and thymosin can regulate the immune function. 5. Treatment of skin lesions: shading agents and emollients can be used as appropriate. It is recommended that patients with dermatomyositis consult a doctor in a timely manner, under the guidance of the doctor for treatment, the drug should be used in accordance with the doctor’s instructions, do not use on their own. Daily attention to rest, pay attention to shading.