This paper systematically reviews 19 published papers on Tongshan dialect from 1979 to 2021, offering a comprehensive evaluation from multiple dimensions, including the publication timeline, key authors and institutions, research themes and hot topics, academic context and trends, existing issues, and prospects. The study finds that Tongshan dialect research has undergone a profound transformation from initial descriptions as part of regional dialects to becoming an independent and finely studied subject. Its research focus remains firmly grounded in historical phonology, with abundant achievements in phonetic description and historical evolution analysis. Grammar studies concentrate on distinctive sentence structures, while lexical and pragmatic research remains relatively underdeveloped. Future research should seek breakthroughs in expanding geographical coverage, deepening theoretical applications, conducting comparative studies that integrate synchronic and diachronic approaches, strengthening interdisciplinary collaboration, and enhancing language resource preservation, thereby advancing the field toward more comprehensive, systematic, and in-depth development.
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