In this study based on Chinese Korean learners to"n"-insertionpronounce real investigation object to organize the"n"-insertionpronunciation errors and error aspects of Chinese Korean learners.Therefore, in this study 50 students now all of the graduateschool Chonbuk national university investigated"n"-insertionpronunciation experiment.50 of the students from the group of China, the beginnerlearner group of "n"-insertion pronunciation error rate is 95.4%,the advanced learner group of "n"-insertion pronunciation errorrate is 87.6%. From the environmental point of view, compoundwords and derived words appear very high error rate, but thesentence error rate minimum. Specifically, the average errorsynthesis environment and derived words environment rates were92.5% and 91.9%, the sentence average error rate is the 89.7%."n"-insertion pronunciation error aspects is mainly five types:divided into, according to the original word mark pronunciation,- v -first syllable final syllable pronunciation sound and afterconnection, first consonant abscission, spaced of sentence pausepronunciation.The beginner learner group of "n"-insertion pronunciation erroraspects is shedding pronunciation or according to the originalmark pronunciation. Characteristics of advanced group of"n"-insertion pronunciation error aspects is first syllable final syllablepronunciation sound and after connection or the incompleteapplication of phonological rules.Finally, this study from also no"n"-insertion research startingpoint, surveys and the actual state of the "n"-insertionpronunciation, through the analysis of the "n"-insertionpronunciation problems in Chinses Korean learners for futurepronunciation improve scheme provides the preparation ofmaterials. The research value of this study lies also officially.