the present disclosure herein relates to an interaction device capable of performing an interaction with a human , and more particularly , to an interaction device capable of performing an interaction with a plurality of participants . the interaction device includes a role classifying unit configured to classify a role for each of a plurality of participants based on an external stimulus signal for each of the plurality of participants and an action adjusting unit configured to perform different interaction operations for each of the plurality of participants based on the role for each of the plurality of participants . an interaction device according to an embodiment of the present application classifies the roles of a plurality of participants according to a participation degree and / or an action state and provides a customized interaction operation for each of participants according to the classified roles . therefore , it is possible to perform a natural interaction operation with a plurality of participants .