Abstract: This paper examines the localization approaches and pathways of the Common European Framework of Reference for Languages(CEFR)in the fields of English and Japanese language education in Japan, revealing the differentiated functions and recontextualization logic of the CEFR in different institutional domains. The study finds that CEFR-J focuses on the scientific reconstruction of language assessment, aiming to address the slow development of Japanese English learners language proficiency through detailed level segmentation and calibrated quantitative tools. The “JF Standards” focus on promoting overseas Japanese language education, constructing practical teaching guidelines through the localization of ability description language in local contexts. The Japan Framework of Reference for Japanese centers on policy guidance, adopting a strategy of “faithful translation with limited adjustments” to provide a unified language standard for educational administration. This tripartite differentiation, that is “theoretical assessment-instructional dissemination-policy management”, demonstrates both the tension of cross-cultural adaptability and local flexibility of the CEFR, offering important insights for the development of a “Chinas standards of Japanese language ability”.

Key words: Common European Framework of Reference for Languages, CEFR-J, the JF Standard for Japanese language education, the Japan Framework of Reference for Japanese, Chinas standards of Japanese language ability