This Hair Ming Gong Open Tone Festival inhibits indoleamine 2,The compound of 3- Twin oxygenase (IDO) enzymatic activity, the method that the Drug object Group containing the compound closes object and benefit controls Treatment proliferative diseases (such as cancer), virus infection and/or autoimmune disease with the bright formula (I) compound of this Hair.本發明公開了調節或抑制吲哚胺2,3-雙加氧酶(IDO)酶活性的化合物、含有所述化合物的藥物組合物以及利用本發明式(I)化合物治療增殖性疾病(例如癌症)、病毒感染和/或自身免疫疾病的方法。