本文研究取材包含湖南、四川、江西、福建、廣東、廣西、台灣等地的客家話，涵蓋地域廣。透過各地客家話的比較，客家話的顎化現象可分為三大類型以及四種演變模式。客家話的顎化現象呈現多彩多姿的樣貌，表現上有顯著的區域特色。見組不顎化的見於台灣、廣東及江西少數方言點，見組顎化的主要在福建、江西、湖南、四川等省。見組字讀為〔tʃ□〕、〔tsu〕的表現是顎化之後的後續演變，目前僅出現在湖南的客家話，這是其他地區的客家話所未見的。

Our research materials include the Hakka in Hunan, Sichuan, Jiangxi, Fujian, Guangdong, Guangxi, and Taiwan, which cover a wide range of geographical areas. Through the comparison of Hakka among those areas, we can categorize the palatalization of Hakka into three major types and four evolution models.There are various forms of palatalization in Hakka dialects, which appear significant regional characteristics. While consonants of Jian (見) Group in Middle Chinese with no palatalization are found in Taiwan, Guangdong ,and few regional dialect spots in Jiangxi, those with palatalization appear mainly in Fujian, Jiangxi, Hunan, Sichuan, and other provinces.〔tʃ□〕、〔tsu〕in the consonants of Jian (見) Group in Middle Chinese are the continual evolution following palatalization, and nowadays only appear in Hunan Hakka.