A building management robot includes a communication unit configured to recognize an identification device corresponding to a first divided space among at least one divided space in a building and acquire first identification information of the first divided space from the identification device, a camera configured to acquire image data including a position where the identification device is recognized, and a processor configured to recognize a user from the image data, confirm an authentication level of the first divided space of the recognized user from a database, and provide the user with a service based on the confirmed authentication level.