Method for forming user interface based on human relations in mobile device

A human relation-based user interface configuration method of a portable terminal is provided to be capable of calculating a user's relationship per person by using log data of the portable terminal, so that a user's human relations can be shown on the basis of the calculated relationship. If a communication event between a user and another person occurs, a portable terminal generates log data corresponding to the communication event(S91,S92). Relationship per person for a certain period of time is calculated from the generated log data(S93). Human relations are displayed on a human relation network screen by using a user item indicative of the user and another person's item indicative of another person, on the basis of the calculated relationship per person(S94).