A customer help supporting device includes an input unit (100) such as a microphone, a data processing unit (200A), a storage unit (300A) such as a hard disk, and an output unit (400) such as a display. The storage unit (300A) has a support information storage section (301) stores support information to be presented to an attendant and a combination of one or more utterance contents the utterers of which are specified. The support information is associated with the combination. The data processing unit (200A) has utterance content temporary holding means (201) for temporarily holding the whole utterance contents sequentially inputted from the time when the conversation relating to the utterance contents starts, utterance content condition matching means (202) for screening the support information to be presented to the attendant only when the utterance contents which are the presentation condition of the support information all match the utterance contents in the utterance content sequence up to the present held in the utterance content temporary holding means (201), and support information output means (203) for outputting the support information to the output unit (400). The support information to be presented to the attendant and the presentation timing are minutely controlled depending on the progress of the utterance contents.
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