Abstract: Disclosed is a language area invasion determination apparatus including a memory unit including a language area invasion determination model, and a processor that controls an operation of the language area invasion determination model included in the memory unit. The processor trains the language area invasion determination model by using one or more training utterance data and outputs language area invasion determination data of an examiner by using test utterance data and the trained language area invasion determination model. The training utterance data and the test utterance data include utterance speech data of a speaker.