Abstract: A 21-year-old female patient presented with erythema and papules on her face, trunk and limbs with alopecia for six years. The lesions mainly manifested as erythema, dropsical heliotrope rash on the double eyelids. The lesions on the trunk and limbs were diffuse symmetry heliotrope rash. Gottron's papules on the hands. The muscle strength was normal. Histopathologic findings revealed mild hyperkeratosis, basal thickening, upper dermis edema and infiltration of mononuclear cells in the superficial blood vessels. The diagnosis of amyopathic dermatomyositis was made. The patient was treated with prednisone and methotrexate, and the skin lesions were significantly improved after two months.