This study brings to a focus on analyzing the types that Chinese native speakers who are learning Korean liquid sound make an error in pronunciation and proposes an alternative plan. The reason that Chinese native speakers feel difficult to tell lateral (sound) and flap (sound) when they study Korean liquid sound is due to the difference on the sound system between Korean and Chinese. That is to say, Korean has lateral sound [l] and flap sound [r] as liquid sound, while Chinese has only lateral sound [l]. This makes Chinese native speakers difficult to pronounce Korean flap sound [r]. Korean liquid sound can be classified into 6 types as follows : 1 type is [Vowel]+[l](examples : [mal], [tal], [kail]). 2 type is [r]+[Vowel](examples : [ramjən], [radio]). 3 type is [l]+[l](examples : [pjəllo], [hillə], [silla]). 4 type is [l]+[Consonant](examples : [pə lpəl], [albam], [t'lgi]). 5 type is [l]+[Vowel](examples : [aidil-i], [natmal-in]). 6 type is [Vowel]+[r](examples : [kirim], [saram], [ariraŋ]). Among these 6 types, the second, the fifth and sixth ones are the types that Chinese native speakers have (much) trouble to pronounce. The second type is to mispronounce flap [r] as lateral [l] and the fifth and sixth types are to mispronounce the front and rear syllable of lateral [l] added to a final consonant and an initial sound. If we can present the examples divided into the type that shows pronunciation error and the type that don't when we edit materials for teaching Korean, it can help foreigners to learn Korean easily. The present author thinks, in relation to the error types, that it will be more effective to present multi-syllable words or simple sentences rather than simple syllable words as an example for studying of pronunciation.