This study aims to investigate the distribution of pitch range perceived by Korean and Chinese listeners to be M(mid)-tone. A total of sixty Korean and Chinese subjects participated in the perception experiment, which contained thirteen stimuli; a one-syllable nonsense word /ba/ containing the highest pitch was manipulated by lowering the pitch twelve times in sequence per semitone. Subjects heard the same speech stimuli three times in random order, and were required to identify the tone of each. The results showed that the range of M-tone perceived by Korean subjects was approximately -3st to -9st lower than the highest stimuli, accounting for 54% of the total pitch range. The range of M-tone for the Chinese listeners was approximately -2st to -9st lower than the highest stimuli, accounting for 62% of the total pitch range. To summarize, the results indicate that the M-tone range perceived by Koreans is lower and smaller than that of Chinese listeners.