A keyword creation method and its apparatus to simply create keywords in user's retrieving a desired item of information from a vast amount of information. The habitual situation characteristics and the degree of typical liking tendency of a user are calculated on the basis of answers on daily items of the user, typical situation dependent keyword(s) of the user in one or more individual typical situations previously prepared is (are) created in accordance with the degree of typical liking tendency of the user and typical situation dependent keyword(s) is (are) revised in accordance with the habitual situation characteristics of the user, so that keyword(s) according to the actual situation of the user can be created.