To improve accuracy of automatic summarization of text information converted from voice information for telephone answer.SOLUTION: A text analyzer comprises: a text acquisition unit which acquires answer text information obtained by converting voice information for telephone answer between a user and an operator into text; an identification unit 433 which identifies a character string indicating the start or the end of answering in which the operator checks identification information of the user in the answer text information; and a specifying unit 434 which specifies a front side text portion before the character string identified by the identification unit 433 in the answer text information or a rear side text portion after the character string identified by the identification unit 433.SELECTED DRAWING: Figure 2
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