The invention provides an identification method and an identification system for a newly-added building. The method comprises the steps of: acquiring the engineering vehicles having staying behaviors;marking stay points of the engineering vehicles; acquiring a first driving track corresponding to each engineering vehicle having the staying behavior; acquiring a corresponding first trajectory set;judging whether a driving trajectory aggregation phenomenon exists in the first trajectory set; if so, acquiring a corresponding first driving region; judging whether a number of the stay points marked in the first driving region is greater than or equal to a preset stay point number threshold value; and if so, matching the first driving region with map data to obtain a region where the newly-added building is disposed. According to the method, information of the newly-added building in a specific region can be identified in a targeted manner according to different demands of users, so that convenience is provided for a third party, a traffic administration department or a navigation system.