As one of Chinese dialect, hakka, reduplication is a morphological method, generating varied new meaning and expression. Here to apply investigation, description method and comparative analysis method to find Hakka dialect reduplication of various types and semantic. The first and the second chapters introduce the research motivation and purposes, research scope as well as relative study in duplication. The third chapter discusses the definition and morphological analysis as well as twelve types of duplication analysis. The fourth chapter mention the meaning of somatic markers, emphatic and style. Then Hakka duplication. Hakka and Taiwanese, Mandarin reduplication of correspondence analysis in chapter 5. The conclusion in chapter 6. Except the 12 basic forms, some forms with minority also mentioned. Comparing with Taiwanese and Mandarin, Hakka reduplication also has a Chinese idiom expression function.