本研究旨在探討中壢客家福佬化現象與客家認同的狀況,從「語言使用」的角度探討中壢市客家族群的福佬化程度,並探究福佬化現象形成的原因,在確認中壢福佬化的現況與形成原因後,進一步探討客家族群的福佬化現象是否會影響客家族群的認同狀況。在研究方法的選用上,本研究先採用文獻分析法探討族群同化與族群認同相關文獻;在對研究主題的背景有相當程度的瞭解後,分析「中壢市的族群關係:以客家人為主體」計畫資料庫中的量化與質化資料,從中瞭解中壢市客家族群之相關狀況;最後以深度訪談來掌握中壢客家族群的福佬化現象與客家認同現況發展。 研究發現「福客通婚之三代同堂家庭」在純客家庭、福客家庭中,為受福佬化現象影響最深的家庭類型;而中壢客家福佬化現象形成的可能原因分成三部份份︰在個人方面與溝通方便、自利動機、客語難懂難學有關,在家庭方面與族群間的大量通婚、客語環境於家庭中的營造有顯著的正相關,在社會方面由於福佬文化為主流,民眾普遍使用福佬話,導致位於邊陲的客家文化,客語流失愈嚴重。在客家認同方面的表現上,「福客通婚下的三代同堂家庭」其認同表現較福客通婚之核心家庭與純客家庭來的低;最後,從Gordon的同化理論來看,中壢的福佬化現象已發生且處於結構同化與婚姻同化之間。 The research of Hoklolization and Hakka identity in Jung-Li focuses on the Hakka of Jung-Li, and the purpose of the research is going to discuss the level of Hoklolization of Hakka through the Hakka dialect use, the reasons of Hoklolization and the Hakka identity. The research gathers the references of ethnic assimilation and ethnic identity first and use the data of the plan: “The ethnic relationship in Jung-Li: focus on Hakka” to get the general information of the Hakka in Jung-Li. The research also uses the in-depth interviews to get the state of play of the Hoklolization and Hakka identity in Jung-Li. The research discovered as below: (a) the Hoklolization affects of the “extended family of mixed marriage between Hoklo and Hakka” strongly; (b) through the analysis, the reasons of Hoklolization include: convenient communication, self-benefit motivation, hard to learn Hakka dialect, amalgamation, the Hakka dialect environment at home, the Hoklo culture is mainstream in our society, so that the Hakka dialect is loss grossly; (c) according to Hakka identity, the “extended family of mixed marriage between Hoklo and Hakka” had lower Hakka identity than other kinds of family; (d) by Gordon’s assimilation theory, the research discovered the Hoklolization in Jung-Li has been happened and the level of its effect is between structural assimilation and amalgamation.