德彪西被称为法国印象派音乐鼻祖,他开创了一种崭新的音乐风格。在他众多钢琴作品中,作于晚期的12首练习曲既有明确的技术训练目的又有非常高的音乐性,这套作品是研究德彪西音乐风格的重要作品之一。本文以这套作品中的第五首《为八度而作》为例,通过对作品的创作风格以及几种八度技术在本曲中的演奏技法,解析德彪西的音乐创作。 Debussy is known as the originator of French Impressionist music, he created a new style of music. Among his many piano compositions, the late 12 eunuchs have both clear technical training purpose and very high musicality. This work is one of the most important works for studying Debussy music style. Taking the fifth “Ode to the Eight Degrees” in this work as an example, this thesis attempts to analyze Debussy’s music creation through the style of writing and the playing techniques of several octave techniques in this poem.