The purpose of this study is analysis on pronunciation practice feature of consonant cluster incoda in Korean language. The result of pronunciation analysis by letting university students who were born and are currently residing in Seoul and Gyeonggi area to recite morphologically constituted ‘uninfleced word + postposition’, ‘verb stem final+ inflectional affix’ phrases with ? consonant cluster incoda, is as follows;1. In morphologically constituted ‘uninflected word + postposition’Firstly, final double consonants are highly used in standard pronunciation as [ㅅ] located after consonant is popularly pronounced as [ㅆ], if ‘uninflected word’ having ‘ㄳ, ㅄ’ as final consonant is combined with postpositional particle starting with a vowel. Secondly, consonant cluster incoda ‘ㄺ, ㄻ, ㄼ, ㄽ’ were mostly pronounced as [ㄹ]. Especially in case of high more erroneous than standard pronunciation of ‘ㄺ, ㄼ, ㄽ’ pronounced from ‘chicken’, ‘eight’ and ‘single-minded’, this case may be regarded as reconstruction course into ㄹ. 2. In morphologically constituted ‘verb stem final+ inflectional affix’Firstly, verb stem final with ‘ㄵ, ㄻ, ㄾ’ were poor in vocabulary and frequently used, high weight of the university students were using standard pronunciation. Secondly, in case of consonant cluster incoda ‘ㅄ’, standard pronunciation is the popular case whereby [ㅅ] located after consonant is pronounced as tense sound, in identical case with ‘uninflected word + postposition’Thirdly, final double consonants ‘ㄺ, ㄼ’ was pronounced as [ㄹ] in the same way as the final double consonants combined with /ㄹ/ at ‘uninflected + postposition’. Especially high weight of the students were found as pronouncing as [ㄹ] even in exceptional composition of not pronounced as [ㄹ], the process of reconstruction to [ㄹ] appears in case of university students’ pronunciation of final double consonants combined with /ㄹ/ in Seoul and Gyeonggi regions. Fourth, final double consonants ‘ㄿ’ was highly pronounced as /ㄹ/ rather than the standard pronunciation, in the same way as the case of final double consonants combined with [ㄹ]. Fifth, in case of final double consonants ‘ㅀ’, erroneous pronunciation took the share of 32%. This is regarded as due to the intention to deliver the function and meaning of postpositional particle exactly by combination with inflectional affix ‘-nun’.