According to the resources and culturing situation of Chinese mitten crab (Eriocheir sinensis) of China, this paper analyzed present problems concerning the culturing of crab fingerlings, adult crab and the aberrance of idoplasm.Meanw hile, to meet conservation demand of the species character, the author discussed some question on the contamination of heredity and the intermix of idoplasm, and put forw ard some suggestions for the conservation of Chinese mitten crab.