Abstract: To understand the lipid state accumulated in livers of cultured Carassius auratus and clarify the functions of body indices in evaluating the lipid accumulation of liver,body indices including condition factor(CF),ratio of body weight to body length(W/L),viscerosomatic index(VSI),heptosomatic index(HSI),mesenteric fat index(MFI)and intestinal index(II)of thirty wild C.auratus and sixty cultured C.auratus were calculated and liver lipid content was determined by Soxhlet method.The morphology of hepatic cell was observed by method of hematoxylin and eosin stain.Relationships between body indices and liver lipid content were studied by software SPSS 19.0.Results showed that all the CF,W/L,VSI,HSI,MFI and II of cultured C.auratus were higher than those of wild C.auratus. The average liver lipid contents of wild and cultured C.auratus were 1.88%±0.69% and 19.49%±4.31%,respectively.Hepatic histology showed that hepatic cells,arranged along the hepatic cell cords,of wild C.auratus were uniform in size and most nuclei were located in the central,which indicated the normal morphology of hepatic cells.However,hepatic cells of cultured C.auratus were irregular in size and morphology,characterized by obvious nuclei migration,atrophy,unclear outline and more fat vacuoles.No significant relationship between CF and liver lipid content of cultured C.auratus was found(P>0.05).However,VSI(X₁),HSI(X₂)and MFI(X₃)all were significantly and positively related to the liver lipid content(Y)(P<0.05),and the regression equation was as follows:Y=8.085+0.282 X₁+3.726 X₂+0.505 X₃(R=0.562,F=3.995,P=0.018).It is concluded from the above that the liver lipid accumulation is very serious.The higher the VSI,HSI and MFI of cultured C.auratus,the more severe of lipid accumulation in the liver.