A method for analyzing a security grade of an information property, and more particularly, a method by which a security grade (a risk degree in security) is analyzed objectively and quantitatively such that risk degree management of an information property can be efficiently performed, is provided. The method for analyzing a security grade of an information property includes: selecting an information property as an object of security grade analysis, among information properties for which risk degree analysis and importance evaluation in managerial, physical, and technological aspects are performed; calculating the property risk degree of the selected property based on the weighted mean of risk degrees and importance evaluation; and mapping the weighted mean of the risk degree and the importance on a 2-dimensional plane having the X-axis indicating the weighted mean of a risk degree and the Y-axis indicating importance, and based on the appearing result, determining the priority of a safeguard.