A configuration item management method includes receiving, from a logical-physical configuration database that manages a correspondence relationship between a logical configuration item database that manages a configuration item including an operation policy of an operation target device for each user and a physical configuration item database that is a physical implementation of the logical configuration item database, an input of a relevant operation policy of a user who changes the operation policy, generating a change policy by which the operation policy of the user received at the receiving is changed, and evaluating an influence that is given to an operation policy of another user by the change policy of the user generated at the generating, to determine whether to execute the change policy and to output the influence to the operation policy of the other user.