This study is about the criticism, which involves swearing, disagreement, challenge and teasing among close friends. And this paper focuses on gender differences of criticism. At first, my analysis shows that participants express more criticisms when they talk with opposite gender friend than when they talk with same gender friend. The result suggests that speaker can be more defiant attitude toward opposite gender friend. Secondly, the expressions of criticism are classified into 6 types, which are (1) interrogate, (2) confirmation, (3) comment & describe, (4) negative assessment, (5) deny, negate& opposite and (6) negative feelings. My analysis shows that the type (3) comment & describe was used about 44% in the case of men. On the other hand, women use all types equally and use interrogative sentences and confirmation more than men.