The purpose of this study was to explore the social information processing of children with ADHD. The total number of subjects were 48 (24 children of ADHD and normal). 4 pictures of the ambiguous situation was used as response stimuli and the responses of the subjects were scored. Each 2 pictures were situation of entry and provocation. They were presented with pictures and explanation by experimenter. Their parents answered the K-CBCL. The design was 2(group) X 2(age) X 2(situation). As results, there was significant effect of group in the recall, cue detection, response generation and evaluation. In addition, the correlations of subdomain of CBCL and social information processing were found. The results of this study were discussed and the following study was suggested.