According to one embodiment, an information extracting method includes: collecting a text in which a keyword of interest appears, the keyword of interest, and a time of creation of the text; extracting a keyword included in the text except for the keyword of interest and configured to extract the time of creation; extracting the keyword having a time score obtained on the basis of an appearance frequency of the keyword in a time interval exceeding a first threshold value and a local score obtained from the appearance frequency of the keyword in a predetermined local area exceeding a second threshold value as a local hot word, and also extract the extracted time interval of the extracted keyword and the keyword of interest corresponding to the keyword; and storing the extracted local hot word, the time interval, and the keyword of interest.