applied to measure body fat. About two thirds body fat stored in subcutaneous tissue, by measuring the thickness of subcutaneous fat, can not only understand the thickness of subcutaneous fat to judge thin and fat level of human body, but also can use themeasured fat thickness to speculate the amount of body fat, to evaluate the proportion of human body. Below two tables are the children and adult’s thin and fat evaluation standard referred from national nutrition survey data for researcher reference.