反串文是近年臺灣社群媒體中興起的一種新興網路語篇形式，然而目前在語言學研究中仍缺乏系統性的探討。反串文作為一種基於立場表演的角色扮演，經常與釣魚行為有所關聯。本研究以 Biber (1988) 的多維度分析為理論框架，探討反串文中語言特徵的共現關係，並分析其所反映的語篇功能與內部語言變異。研究資料為 Threads 平台上由作者明確標示為反串文的貼文。本研究以 CKIP 詞性標註為基礎，並針對中文文本特性調整 Biber 的語言特徵系統，建立 46 項語法與語用特徵。本研究以特徵是否出現作為編碼依據，其後透過多重對應分析萃取文本中的潛在維度，並採用 Benzecri (1992) 修正法估計解釋變異量。研究結果顯示，反串文主要呈現三個功能維度：（1）資訊詳述與精簡表達之對立、（2）陳述性表達與互動性挑釁之對立，以及（3）人際立場與量化資訊之對立。整體而言，反串文傾向使用較高互動性與立場導向的語言特徵，並呈現連續且內部多樣的語言變異。本研究除展現多維度分析應用於中文社群短文本分析的可行性外，也顯示其可進一步應用於其他新興網路語篇類型之研究。

Fan-chuan wen is an emerging form of online discourse in Taiwanese social media that remains underexplored in linguistic research. As a form of stance-based role play, fan-chuan wen is often associated with trolling. Using Biber's (1988) Multidimensional Analysis (MDA), this study examines the co-occurrence of linguistic features in fan-chuan wen and explores the discourse functions and internal linguistic variation. The dataset consists of Threads posts explicitly marked as fan-chuan wen by their authors. Based on CKIP POS tags, Biber's linguistic features were adapted for Chinese, resulting in 46 grammatical and pragmatic features. Features were encoded according to their presence in each text, and Multiple Correspondence Analysis (MCA) was applied to extract the underlying dimensions. The explained variance was estimated using Benzecri's (1992) correction. Three primary dimensions were identified: (1) Informational Elaboration vs. Condensed Expression, (2) Declarative Statement vs. Interactive Challenge, and (3) Interpersonal Stance vs. Quantified Information. Overall, fan-chuan wen tends to favour interactive and stance-oriented linguistic features while exhibiting continuous and internally diverse patterns of linguistic variation. This study demonstrates the applicability of MDA to Chinese social media short texts and its potential for investigating other emerging forms of online discourse.

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