The main objective of this study is to provide numerical guideline for size establishment of safety shoes about adult men(over 20 years) compared to physical standards of nation (report published in 1997). The sample for this work was chosen from data which were collected and measured by Size Korea during two years (20032004). In order to analyze and compare features of men's foot, analysis was performed about 1,685 subjects on 2 parts such as foot length and foot circumference. For the specific comparison on foot size, Mollison's comparison graph was used. The result of this study can be applied in manufacturing and design of shoes and socks. Also, it will enable us to have fruitful information on considerable items during manufacturing and design of safety shoes.