本論文主要在探討國語的音韻結構，共分四部份討論之：（一）音位和它們的實際發音情形；（二）音韻成分；（三）詞音位的變化；（四）音位的排列次序和組成。在本論文中，首先我們提出國語有十九個輔音，五個元音，四聲調和一個輕聲調。接著，我們分析每一個音位的組成份子。然後我們探討國語中詞音位的變化情形。最後我們討論國語中音位的排列次序和組成情形。

In this paper, we will discuss the phonological structure of Mandarin Chinese in four categories: (1) the phonemes and their phonetic realization, (2) the phono-logical components, (3) the morphophonemes, and (4) phonotactics. Here we pro-pose that Mandarin Chinese has 19 phonemic consonants and 5 distinctive vowels, in addition to 4 tones plus a neutral tone. We analyze each phoneme into their respective phonological components. Then we discuss the morphophonemic alternants. Finally we utilize some diagrams to illustrate the possible sequences and combina-tions of sounds in the language.