A comment recording apparatus, including a voice input device and a voice output device for recording and playing back comment voice, includes a voice obtaining unit, a voice recognition unit, a morphological analysis unit, and a display generation unit. The voice obtaining unit obtains comment voice as voice data, and registers the obtained voice data to a voice database for each topic specified by a topic specification device and each comment-delivered participant identified from the voice data. The voice recognition unit conducts a voice recognition process on the voice data to obtain text information. The morphological analysis unit conducts a morphological analysis on the text information, and registers a keyword extracted from words obtained by the morphological analysis unit to a keyword database with topic and comment-delivered participant along with voice. The display generation unit displays the keyword in a matrix while relating the keyword to a topic and a comment-delivering participant.