Abstract: This paper is a part of research project on fungous diseases of medicinal plants in Yunnan a project supported by the National Natural Science Foundation of China.Among twenty Eight Fungous diseases studied,twenty six species of medicinal plants from Jinghong,Baoshan,Kunming and several other places are listed.Twenty one of them are new distribution in Yunnan and five are new records in Yunnan.Two new records in China,i.e.l. Acremonium alternatum Link causing twig blight on Aquilaria agallocha Roxb.occasionally distributed in Jinghong;2. Phyllosticta cojani Rangel causing leaf spot on Caesalpinia sappan (Caesalpinioideae)commonly distributed in Jinghong.