The purpose of this study was to explore the relationship among reading domains and sub domains, and types of reading difficulties in elementary school students with suspicion of Hangeul dyslexia. Using the results of the Korean Language-based Reading Assessment(KOLRA) of a total of 87 students suspected Hangeul dyslexia, the relationship between the reading domains and the type of reading difficulty was investigated through correlation, regression, and cluster analysis. As a result of the analysis, the influence of the sub-domain was slightly different depending on the reading domain. Specifically, word decoding and paragraph reading fluency showed significant explanatory amounts for reading comprehension, dictation and phonological awareness for word decoding, and dictation, rapid automatized naming and word decoding for paragraph reading fluency. It was shown that there can be at least four subtypes as the type of difficulty in reading for students suspected Hangeul dyslexia: overall poor type, lack of phonological awareness type, type with insufficient amount of decoding activity, and type with slow processing speed. Unlike English, for the diagnosis and instruction of reading Hangul, which has high regularity in letter-sound correspondence, it seems that diagnosis and instruction should be carefully performed by at least distinguishing between poor decoding accuracy due to poor phonological awareness and poor reading fluency due to insufficient processing speed.