This study aims to examine the interlanguage pattern of Korean word order by inductively analyzing errors of word order according to proficiency and L1 of Korean learners and confirming the distribution of word order error types. For this, the study identified the acquisition patterns of Korean word order based on 567,000 word Learners Corpus of 3,600 samples constructed by the National Institute of Korean Language. The analysis results are as follows: First, 157 word order errors were found in 149 Korean learners. Among them, Korean learners have the highest number of adverb word order errors which appeared 81 times (51.6%), followed by noun word order errors which appeared 50 times (31.8%). Discourse word order errors appeared 13 times (8.3%), sentence word order errors appeared 11 times (7.0%) and other word order errors appeared 2 times (1.3%) in this order. Second, the error frequency of adverb word order was the highest in common among beginner, intermediate, and advanced, and the error frequency of noun word order was the second highest. Though learners of beginner and intermediate level and learners of advanced and intermediated level each have differences in the error frequency ranking of sentence word order and discourse word order, it was not statistically significant. Third, the acquisition distribution of word order according to learner’s L1 was found to be statistically significant in the adverb order and the noun word order. In the case of adverb word order, Vietnamese learners had fewer errors in adverb word order than other learners, while Japanese learners had more adverb word order errors. Next, in the case of noun word order, Vietnamese learners had more noun word order errors than other learners of Korean, but English learners of Korean found fewer noun word order errors.(Yonsei University)