| By comprehensive investigation and possession of relevant data, especially Taiwan’s,this paper focuses on the evolution of Hakka dialects which are from Fujian in different language environments of Taiwan and makes phonetic comparisons between Fujian and Taiwan from the perspective of homologous allotropic.Through the synchronic comparison of various points(mainly between the immigration homeland) by the thread of ancient rhyme,this paper gets some phonetic historical features and the possible paths of evolution and other linguistic phenomena. At the same time, based on the research above,it summarizes the rules of the phonetic retention and evolution in the context of language contact. |