This study was done to investigate the relationship between ultrasonograph fat density (ULFD) using objective measurement and serum enzymes for testing liver function in 101 healthy adults(43 males and 58 females). Average serum enzyme activities in males and females were GOT27.111U/L and 22.46IU/L, GPT 34.06IU/L and 18.501U/L, and ${gamma}$-GTP 37.67IU/L and 17.201U/L, respectively. Males showed significantly higher activities of GPT and ${gamma}$-GTP than females. ULFD of the obese group (BMI$geq$25) was significantly higher than that of the nonobese group. GOT, GPT, and ${gamma}$-GTP tended to be high in the obese group. GPT and ${gamma}$-GTP of the high TG group (TG$geq$170) tended to be markedly high for males, but not for females. GPT was positively correlated with ULFD, body weight , and weight-to-height, ratio, and ${gamma}$-GTP was positively correlated with body weight, weight-to-height ratio. BNI, and KI. ULFD and ${gamma}$-GTP were positively correlated with serum TG. These results suggests that , among serum enzymes for testing liver function, GPT has a close relationship with ULFD using objective measurement, while GOT does not. Also , ${gamma}$-GTP has a close relationship with parameters for obesity.