Abstract: To provide a human relationships registering system, a method and a server for registering human relationships, a program for registering human relationships, and a medium storing human relationships registering program and readable by a computer, all of which are used to establish wide and close relationships with members having a variety of occupations or engaged in various technical fields and to obtain expert knowledge or information. The human relationships registering system comprises first data processing units 2 and 3 including sections for receiving personal data of a new member, and a second data processing unit including a section for storing the received personal data. The second data processing unit stores the personal data of the new member in correlation to an existing member when the existing member confirms the new member.