The purpose of this study is to improve articulation ability, which is one of the common problems experienced by children from North Korean immigrant family in bilingual environment, by analyzing the articulation in overall, instead of focusing on each individual segment. The subjects of the study are the children who have North Korean defector mother and Chinese father. There are twelve subjects in total, half female and half male, and they all speak Chinese in their native language, and the length duration of their residence in Korea ranges from one month to three and a half years. 103 words are used in this study and they are selected from the Korean Standardized Phonological Precision Test and the Korean Phonological Articulation Test. The subjects had difficulty in naming the picture or were requested to repeat the articulation, the researcher performed one-time repetitive modeling. In order to study the differences in segmented vocabulary among the subjects grouped by gender and residency period, the researcher analyzed Proportion of Whole-Word Correctness, Phonological of Whole-Word complexity, Proportion of Whole-Word intelligibility, Proportion of Whole-Word Variability as provided by Ingram(2000). First, the subjects’ gender and duration of residence did not have a significant correlation with Proportion of Whole-Word Correctness, Phonological of Whole-Word complexity, Proportion of Whole-Word intelligibility and Proportion of Whole-Word Variability. Second, there is a significant correlation in Proportion of Whole-Word Correctness, Phonological of Whole-Word complexity and Proportion of Whole-word intelligibility as to the word measurement used by North Korean children from immigrant family. There was no correlation between Proportion of Whole-Word Variability and other types of analysis.