Meta-cognition is a type of knowledge and cognition about cognitive phenomena, and also is the control of one’s memory, comprehension and cognition. Meta-cognition likes self-cognition and it can be seen as individual comprehend him or herself. It will effect on individual s attitudes or behaviors. This paper explains the relationship between meta-cognition and personality. Locus of control is a belief that work can be done is depend on how much you have try (internal control orientation), and a belief that whatever how much you try, they think most of things depend on fate and fate can be seen as a decisive factor (external control orientation). Type A behavior pattern is more urgent, while type B behavior pattern is more and more peaceful. Type A/B behavior pattern could increase or decrease meta-cognition. In this paper, we gathered 247 Korean college students’ questionnaires and made the empirical analysis. As the result, meta-cognition was related to both locus of control and behavior pattern.