現在在台灣通行的台語、客家話和日語之間存在著為數不少發音相似或詞義和語形基本相同的「共同詞彙」。活用共同詞彙的知識可以做為一種學習策略，幫助台灣日語學習者學習日語。本研究的目的在闡明台灣日語學習者在學習日語時，共同詞彙的知識到底對日語詞彙的學習有多少程度的幫助。本論先探討發音面相似的共同詞彙'建製「日台客語共同詞彙對照表」透過其語種、意義分類的分析，以及和日語能力檢定測驗（JLPT）出題基準對照比較，探討「日台客共同詞彙對照表」作為同時學習日語和台客語補充教材的可能性

There are many Japanese loan words in Hakkanese, Taiwanese. Many of them have to borrow the Japanese pronunciation. These words will be the ＂common vocabulary elements＂ in Japanese and Hakkanese, Taiwanese, that the meaning and pronunciation are basically the same. This research wants to analyzethe common vocabulary elements in Japanese and Hakkanese, Taiwanese through type of words, as well as meaning classificationand ＂topic and benchmark of vocabulary in Japanese Language Proficiency Test＂. To analyze the similarities and differences between the common vocabulary elements in Japanese and Hakkanese, Taiwanese phenomenon and analyze the correspondence between words, to explore how to organize ＂common vocabulary elements table＂ as the supplementary materials learning Japanese and Hakkanese, Taiwanese