The purpose of this study is to analyze the acoustic characteristics of Korean word-initial stops produced by students majoring in Korean in China. To address the goal, pronunciation assessments were performed, and the assessments consisted of two parts. One was to look at and read the material given, and the other was to listen to and repeat the experiment stimulation given. Moreover, how the word-initial stops produced at the two experiments differed was observed with the VOT and following vowel F0. The results of the experiments are as follows. The VOT produced at the experiment of looking at and reading the material given, the three-way (lenis-fortis-aspirated) phoneme distinction was well observed, and the following vowel F0, too, revealed lenis-fortis/aspirated phoneme distinction well. In the VOT produced at the experiment of listening and repeating, difference between the lenis and aspirated phonemes was not observed. This implies that the auditory perceptual features of Korean word-initial lenis phonemes do not influence Korean pronunciation negatively, and also, it stresses the importance of pronunciation education focused on the manner of articulation.