This study observed the pronunciation error patterns in Korean syllable coda by native Chinese speakers, and investigated the effects of adjoining sound on the target sound. The examinees were Chinese students enrolled at language school in Korea, including 13 beginners and 13 intermediate learners. Our data indicate that the error rates were high in the order of /t/(81%), /k/(64%), /n/(32%), /m/(25%), /l/(24%), /ŋ/(15%), and /p/(12%). In addition, the pronunciation errors were relatively frequent when the coda consonant was followed by an onset consonant. Considering that only /n/ and /ŋ/ can be placed at coda position in the examinees’ first language, it was an unexpected result that pronunciation errors for /p/ were fewer than those for /n/ or /ŋ/. These results indicate that the phonological correspondence between first language(L1) and second language(L2) can not account for all of the observed errors. The examinees were influenced by the articulatory difficulty of the target sound of L2 itself, although the phonemic system of L1 may influence the pronunciation of L2. These support Markedness Differential Hypothesis which suggest that certain linguistic elements are more basic, natural, and frequent(“unmarked”) than others which are referred to as “marked”.