To improve knowledge of the ingestion and organ content of calcium, cesium, iodine, potassium, strontium, thorium, and uranium that have a high priority in radiological protection, a total diet and organ content studies was conducted. The total diet study used the market basket sample method with representative sampling. For the organ content specimens of muscle, skeleton, liver, kidney, lung, and thyroid were collected during autopsies of normal, healthy adult accidental death victims. The concentration of above stated elements in the diet and organs were analyzed by nuclear and nuclear-related techniques with strict quality assurance measures. The results are presented in the paper and compared with previous national and international data and the parameters of current International Commission on Radiological Protection (ICRP) Reference Man. The study provided a new and reliable database for setting the parameters for the Chinese reference man and the reference Asian man. It also facilitated the study on biokinetics behavior of their radiation counterparts in human body and helped in the realistic assessment of their internal radiation doses.