Abstract: The micro-morphological characteristics of nut epidermis of 11 species of Scirpus from Shandong were studied under light microscope and scanning electron microscope (SEM).The micro-morphological characteristics of the nut epidermis were divided into four types: Ⅰ Waveform reticulate sculpture,Ⅱ Tuberculate-reticulate sculpture, Ⅲ Smooth sculpture,and Ⅳ reticulate sculpture.The evidence supported that section Sect.Bolboschoenus Ascheron,Sect.Scirpus & Sect.Trichophorum (Pers.) Darl.,which belongs to Subgen.Scirpus should be promoted to Bolboschoenus (Ascheron) Palla,Scirpus L..Sect.Schoenoplectus Reichb.& Sect.Actaeogeton Reichb,which belongs to Subgen.Isolepis should be promoted to Schoenoplectus (Rchb.) Palla.Sect.Schoenoplectus (Reichb.) F.Z.Li & L.N.Liu,Sect.Ac-taeogeton (Reichb.) F.Z.Li & L.N.Liu,Sect.Ehrenbergii F.Z.Li & L.N.Liu should be retained in Schoenoplectus (Rchb.) Palla.Evidence of the micromorphological characteristics of the fruits supported that Scirpus trisetosus Tang et Wang should be treated as a synonym of Scirpus triqueter L.Eight species of plants names of Scirpus from Shandong have been amended.