Abstract: A method of predicting personality traits using a personal life log and an apparatus for performing the same are disclosed. The method of predicting personality traits comprises collecting personal life log in a social network, generating a user behavior matrix by defining an object about user's behavior through analysis of the collected personal life log in a triple structure and extracting a user behavior parameter through the generated user behavior matrix, obtaining interaction between a user and a friend by analyzing the personal life log and obtaining a friend relation characteristic parameter by using the obtained interaction, obtaining a moving path characteristic parameter by using location information made in a feed by the user through analysis of the personal life log, and predicting personality traits by applying the user behavior parameter, the friend relation characteristic parameter and the moving path characteristic parameter to four learned personality traits models.