Provided are a display device for more accurately providing a function intended by a user upon reception of the voice command and an operating method thereof. The display device comprises a wireless communication unit configured to communicate with at least one external server, a storage unit, a voice recognition unit configured to receive a voice command, a control unit configured to acquire a function corresponding to the voice command, a determination module configured to determine a provider providing the function corresponding to the voice command and an output unit configured to receive data related to the function from the at least one external server or the storage unit according to the determined provider and output the function corresponding to the voice command based on the received data.