A problem of the invention is to provide information management information capable of simply and efficiently updating information to be managed. An information management method of the invention is implemented using a computer on which a predetermined information management program is installed. Information stored in a node unit as information to be managed includes node number, page number, parent node number, node label, node display attribute information, variable information, script for substitution, a script for generation and link information. The script for substitution is a script obtaining a value of self node variable data by performing computation using self node variable data which is variable data included in its node data and upper node variable data which is variable data included in node data of a lineal upper node of its node. A value of a public variable of its node is updated by executing this script.