Six species of Sedum are taxonomically discussed and revised in the present paper．  As a result，names of seven species，one subspecies and two varieties are reduced．  Critical comments on and a full synonym of these taxa are presented．  The taxonomic status of S．phyllanthum Lévl．et Vant，and S．subtile Miq．，which were treated as doubtful species in Flora Reipulicae Popularis Sinicae (FRPS) Vol．34(1),is discussed．S．formosanum N. E. Br.，treated as a synonym of S. alfredii Hance in FRPS，  is recognized as a distinct species，and it is found to extend westwards to the mainland of China． S. hakonense Makino  is recorded as new to China．