The present disclosure relates to a terminal device, a cloud device, a method for analyzing a user's behavior by a terminal device, and a method for analyzing a user's behavior by a cloud device. A terminal device according to an embodiment of the present disclosure comprises: a communication interface unit for communicating with an external device; a control unit for obtaining data to be used to predict a user's behavior, anonymizing a part of the obtained data, and providing to the external device, via the communication interface unit, the part of the data which has been anonymized and the remainder of the data which has not been anonymized; and a display unit for displaying notification information related to the users behavior which is based on behavior prediction data analyzed in the external device using the provided data.