Abstract: The present paper deals with preliminary systematic revision on survey to parasitic crustacea in Yunnan,China,conducted since 1973.Altogether 130 species of fishes were examined.From which 28 parasitic crustacea were discovered,in addition to Caligus fronsuganinus,Argulus kunmingensis and Argulus yunnanensis discovered by Shen (1940,1948).The number of parasitic crustacea is up to 31 species.Among them 25 species belong to Copepoda,5 species belong to Brachiura,1 species belongs to Isopoda.In consideration of the convenience for readers,the author compiled a key to species.Besides,a new species is described,I.e.Lamproglena dibara,sp.nov.Diagnosis:The new species resembles L.carassii and L.heterognatha in general appearance but differs from them in having one blunt tooth on the base of the shortest claw of maxilla,and in having coupling-bars between 1st and 2nd pair of legs.Besides,the new species differs from L.heterognatha in the form of maxilla;differs from L.carassii in 2nd antenna non-segmented,the segment number of exopod of 2nd to 4th thoracic legs and 5th thoracic leg uniramous.