Abstract: new species and 1 new combination of Cercospora and allied genera on medici-nal plants in Guangdong Province were reported in this paper. They wereCercospora cantonensis P.K.Chi sp. nov. on Dioscorea opposita, C. scrophularicolaP.K.Chi sp. nov. on Scrophularia ningpoensis,C.rabdosiae P.K.Chi et Z.D. Jiangsp. nov. on Rabdosia serra, C. eupatorii-fortunei P.k.Chi et Z.D.Jiang sp. nov. onEupatorium fortunei, C. alismaticola Z.D.Jiang et P.K.Chi sp. nov. on Alismaplantago-aquatica var. orientale, C. stahlianthi Z.D.Jiang et P.K.Chi sp. nov. onStahlianthus involucratus, Corynespora catharanthicola Z.D.Jiang et P.K.Chi sp. nov.on Catharanthus roseus and Pseudocercospora quisqualidis (Narain & B.s.Mehrotra)Z.D.Jiang et P.K.Chi comb. nov. The detail descriptions and latin diagnoses weregiven for the new species. The Type specimens of the new species are deposited inthe Department of Plant Protection, South China Agricultural University,Guangdong; China.