随着中国经济的迅速发展，中华文化对世界的影响越来越大、学习汉语的外国人也越来越多。日本是学习汉语最早的国家之一，日语从古代开始就和汉语有接触，至今汉语也是日本人主要学习的热门外语之一。日语和汉语某些方面相似，因此，日本人普遍认为日本人学习汉语比较容易，实际上并非如此。目前，面向日本人学习汉语的研究以汉语偏误情况或汉语个别项目的习得为主，缺少从正面角度描写日语母语者汉语学习成功人士的案例研究。因此，研究日语母语者汉语学习成功人士的汉语学习经验，十分有意义。 本文选择日本大阪大学著名教授古川裕作为日语母语者汉语学习成功案例，运用教育心理学同化理论，用案例研究方法，以详细的面对面访谈录音材料为原始材料，描写了案例汉语语言要素学习情况、汉语语言技能获得情况、归纳分析了案例学习汉语的策略和成功因素以及案例溶入自己学习汉语经验的汉语教学经验。 本文主要结论是：一、案例学习汉语基础知识时，不主动和汉语言对比。古川在学习汉语基础知识时，没有和日语对比。古川认为和日语对比容易发生错误。二、初级阶段数倍于输出的大量输入。初级阶段时，用大量时间输入汉语语言要素。三、寻找自己喜欢的学习主题与学习方法。找到喜欢的内容和适合的学习方法之后容易保持学习热情还能激发学习热情。四、汉语水平达到一定程度再学习语言抽象概念自觉学习主动寻找机会大量使用汉语。无论是学习汉语语言要素，还是掌握学习汉语语言技能时，先要多学习各个方面的基础内容。五、坚持不放弃学习就能到达光明学习汉语的自由的世界。做事不放弃的好处，就是能给自己一种满足感与自信。 最后，为面向日本成年人的汉语教学提出了教学建议。希望能为日本汉语教学提供新的参考。

With the rapid development of Chinese economy, it has aroused the curiosity of world toward Chinese culture. Japan is one of the earliest countries to learn Chinese. Japanese language has related with Chinese language since ancient times. So far, Chinese is also a popular foreign language for the Japanese. Japanese generally believe that to learn Chinese is easy and advantageous due to the similarity on both language, but it is not true in fact. There are many researches about Japanese learning Chinese, but there are mainly to study the textual errors or the acquisition of specific language element. We found that there is deficiency of the research on the case study of the successful Japanese learning Chinese language. Therefore, it is worthwhile to explore and analyze the successful learning Chinese experience of Japanese. We have invited a successful Japanese Chinese language leaner as the case, with the method of case study, and with the assimilation theory of educational psychology, and through detailed face-to-face interviews, we described his learning situation of Chinese language elements, the acquisition of Chinese language skills. Then, we analyzed his Chinese learning strategy, success factors, and Chinese teaching experience. Finally, we conclude his characteristics of Chinese learning and the characteristics of teaching Chinese in Japan, and we provide effective teaching suggestions for Chinese teachers in Japan. We hope this study can provide a new reference for Chinese language teaching in Japan.