The purpose of this study is to develop and validate a reading maturity test tool that is appropriate for the social and cultural situations of Korea. This study translated and revised the Reading Maturity Survey by Thomas(2001). The questionnaire of Reading Maturity Survey was modified and supplemented after expert review of and cognitive interviews on the validity of the questions. Thereafter, datas were collected from Korean university students. An exploratory factor analysis using the maximum likelihood method was conducted, which showed that the Korean reading maturity test tool has a six-factor structure. A confirmatory factor analysis showed that the model fit of the six-factor structure is superior. The Korean reading maturity test tool consists of 32 items with six factors: “basic reading skills”(eight items), “reflection and life changes through reading”(eight items), “interest and attitude toward reading”(four items), “advanced reading skills”(five items), “reading for understanding humanity and life”(three items), and “reading for knowledge acquisition and expansion”(four items). The overall reliability of the 32 items has Cronbach’s α of .950. The RMSEA value of the model fit index is .50; the CFI, TLI, NFI, and GFI values also met the criterion of being above .90. Therfore, the model effectively explained the relationship between the measured variables. The model was verified to have convergent validity and discriminant validity.