Gustav Mahler (1860-1911), was one of the great composers of the late-Romantic era. He composed forty-five Lieder. These Lieder, as influences by Mahler¡¦s symphonic work, show a broader scope, in terms of the sound, the length and the tension, as compared to Lieder by previous composers. Impacted by Romanism and Nationalism, Mahler composed twenty-three Wunderhorn-Lieder, which based on Des Knaben Wunderhorn by German poets Achim von Arnim (1781¡V1831) and Clemens Brentano (1976¡V1842). The Wunderhorn anthology has more than seven hundreds poems, which is a significant piece of German literature work for folk songs. Four Wunderhorn-Lieder are discussed in this paper: ¡§Ich ging mit Lust durch einen grünen Wald,¡§Scheiden und Meiden¡¨, ¡§Wer hat die Liedlein erdacht¡H¡¨, and¡§ Wo die schönen Trompeten blasen¡¨. The main theme of these four Lieder is love, and each of them represents a different type of love experience. The study mainly contains four parts: the biographical information about Gustav Mahler, the Lieder of Gustav Mahler, a brief introduction of poets Arnim and Brentano, and a performance analysis of the four Wunderhorn-Lieder. Through analyzing these four Lieder, we can gain insight into how poetry was played up and extended by Mahler using music, and help the vocalists better express the spirit and the music syntax of Mahler when interpreting his Lieder.