The invention is directed to a learning-type interactive device which performs voice dialogue with a user and accumulates a result of the voice dialogue as knowledge including: a voice recognition portion which performs voice recognition on an acquired uttered voice of the user and converts the voice into text; an intention understanding portion which analyzes an utterance intention from the text voice-recognized by the voice recognition portion with reference to intention understanding model data learned from intention understanding learning data; an answer generation portion which refers to a QA DB and generates an answer text from the utterance intention analyzed by the intention understanding portion, a knowledge extraction portion which extracts knowledge from the text voice-recognized by the voice recognition portion, the utterance intention, and the answer text, and a knowledge classification portion which classifies the knowledge extracted by the knowledge extraction portion according to characteristics.