This paper probes into the category fruit,aiming at revealing the categorization of fruit to find them prototype in under 35-year-old women's cognitions at present.And author uses related category theories,such as prototype category to analyze the outcome of the research.In addition,author also locates women who under 35 years old as this research’s informants to find whether the prototype changed in their cognition or not.The method of research is questionnaires,and hands out the questionnaires by the Internet.And this research also uses SSPS to analyze the effective data.