A voice dialogue apparatus analyzes an acquired user's voice, generates a parrot-like response sentence and outputs the generated parrot-like response sentence. The voice dialogue apparatus includes storage means for storing the user's past voice, average calculation means for calculating an average value of voice sentence lengths each indicating a length of the user's voice based on the user's past voice, candidate generation means for combining a dependency word, which establishes a dependency relation with a noun included in the acquired user's voice, with the noun to generate a plurality of response sentence candidates, and repetition generation means for selecting, in association with the average value of the voice sentence lengths, one response sentence candidate from among the plurality of response sentence candidates and using the selected response sentence candidate as it is or processing the selected response sentence candidate to generate the parrot-like response sentence.