Taking the model of skin adhere,use the physique data of 31 province invested by General Administration of Sport of China and other 9 departments to calculate the total skin area of Chinese people(age3~69)and then assess the difference of model among EPA and Japanese researchers.The results showed that the total skin area of average male adult was 1.77m2 and 1.57m2 for the female,respectively,which are lower than those of American counterparts by 11.3%and 10.2.The skin area for 3~17 male teenager was between 0.697~1.726m2 and 0.668~1.525m2 for female.The were significant difference for total skin area between male and female age in 3~12.The results of significance testing showed that there were significant difference among those models.It is suggested that the parameter value of Chinese in their dermal surface exposure should be used our own model.