A syntactic analysis apparatus according to an embodiment of the present disclosure may include an input device receiving a phrase uttered from a user, and a learning device performing at least one or more of extension of an intent output layer for classifying an utterance intent of the user from the uttered phrase and extension of a slot output layer for classifying a slot including information of the phrase and extending a pre-generated utterance syntactic analysis model, such that the uttered phrase is classified into the extended intent output layer and the extended slot output layer, thereby broadly classifying an intent and a slot for the phrase uttered from a user.