”XIN TIAN YOU”, which originated in China-Loess Plateau in the northern part of Shanxi, is one of the most widespread and influential folk songs. Through the free and fervent melody, we can find the folk-song form of ”XIN TIAN YOU” and that of the ”Shan-Chiu” in Shanxi and ”Pa-Shan-Diau” in inner Mongolia are of the same property. Affected by particular geographical and social environments, ”XIN TIAN YOU” strongly presents local characteristic. This essay expects more thorough comprehension of the cultural contents and artistic expression of ”XIN TIAN YOU” bred by the culture of China-Loess Plateau through the focus on the background factors such as natural and social environments as well as the musical characteristics of ”XIN TIAN YOU,” and on lyrics characteristic and its relations with music.