The purpose of this study is to diagnose the reading comprehension level of high school students and to analyze the profile of their reading comprehension. To carry out these tasks, attributes which comprise reading comprehension competency were extracted from 356 high school students, and the relation between items and attributes(Q matrix) was validated by using item parameters estimated from the Fusion model. The results of reading comprehension profile analyzation of high school students are as follows. First, with employing the cognitive diagnostic model, it could be possible to analyze the profile of high school students’ reading comprehension. Therefore, we could offer diagnostic information regarding their strong points and weak points. Second, we could be able to arrange learning pathways, level-based or tailored teaching-learning schemes about reading comprehension based on the analyzation of the attribute profile.