To assess the internal dose by $^3H;&;^{14}C$ in total diet of inhabitants near Wolsung Nuclear Power Plants, TFWT, OBT and $^{14}C$ concentration in total diet was analyzed for collection region and time. TFWT, OBT and $^{14}C$ concentrations were in the range of 3.19-42.2 Bq/L, 1.00-39.4 Bq/L, and 0.230-0.855 Bq/gC, respectively. The calculated annual effective dose with TFWT, OBT and $^{14}C$ is $6.10{ imes}10^{-5}mSv/y,;3.71{ imes}10^{-5}mSv/y;and;7.08{ imes}10^{-3}mSv/y$, respectively. And then annual internal dose with total diet for inhabitants near Wolsung NPPs is about $7.18{ imes}10^{-3}mSv/y$, which is about 0.72% of annual effective dose limit 1 mSv/y.