Method and device for forming group using communication history information

When a communication occurs in an electronic device, groups are automatically generated according to the user's situation by: storing a communication history in a database; generating a first group from the database on the basis of the time and location information stored in the database at a predetermined time; retrieving a transmission list from the database and generating a second group from the database on the basis of an identifier of an opposing party included in the transmission list; retrieving a reception list from the database and generating a third group from the database on the basis of an identifier of an opposing party included in the reception list and the identifier of the opposing party included in the transmission list; and generating a fourth group on the basis of the information commonly included in at least two groups of the first group, the second group and the third group.