An advocate of the exclusive use of Hangul asks to an advocate of mixed use of Chinese characters. We don't have any problems in delivery of meaning by only using of Hangul, and don't get any educational effects by teaching Chinese characters, then why do we have to study Chinese characters mixed that are the remnants of Japanese colonial era, why do we increase studying burden and private education? On the other hand, an advocate of mixed use of Chinese characters ask to an advocate of the exclusive use of Hangul. We can't communicate clearly by only using of Hangul, and ㄴstudying Chinese characters strengthen thinking power, then why do we have to stop the mixed use of Chinese characters that is effective in education of students. There are big differences of opinion each other. How can we harmonize these two conflicting thoughts. In results, We have to stand not on the scene of a dispute but on the field of an education, and we have to watch and judge this problem as we think about my own child. Which is effective in understanding any vocaburary, and in improving Korean language ability? This question is the only one standard of choicing way to go. Learning and communicating capabilities, thinking and creating powers of students are the most important factors in judging way to go. Any other factors have to be excluded.