Own-race effect is the phenomenon that individuals are better able to recognize the faces of people from their own race than the faces of people from other races. Sporer (2001) suggests that other-race faces may activate a categorization response, which may divert ones attention away and in turn hurt the recognition of these faces (in-group/out-group model). In the current study, we manipulated in/out group and attentional resource as independent variables to verify their influence on the own-race effect. We found that in the high attention condition, only in-group with other race participants, not out-group with other race participants showed the own-race effect. But in the low attention group, the own-race effect occurred only for out-group with other race participants, not for in-group with other race participants. The implication of these findings on the roles of social categorization and attentional resource in the own-race effect will be discussed in our presentation.