The present electronic device comprises: a memory for storing a voice recognition model and first recognition information corresponding to a first user voice acquired through the voice recognition model, the voice recognition model including a first network, a second network and a third network; and a processor, which inputs voice data corresponding to a second user voice in the first network so as to acquire a first vector, inputs the first recognition information in the second network for generating a vector on the basis of first weight information, so as to acquire a second vector, inputs the first vector and the second vector in the third network for generating the recognition information on the basis of second weight information, so as to acquire the second recognition information corresponding to the second user voice, wherein at least a part of the second weight information is the same as the first weight information.