The songs of Yellow-streaked Warbler (Phylloscopus armandii) were collected at Lianhuashan Mountain in Gansu, Helan Mountain in Inner Mongolia and Ningxia between May and August in 2002, 2005 and 2007. Totally 108 minutes of songs from 18 individuals were analyzed. The frequency of songs of the Yellow-streaked Warbler was ranged from 2.63 to 6.32 kHz; the average notes number was 5.56±2.47 (n=124); duration of the syllable was 1.07±0.30 s (n=124), with the longest of 2.68 s. The interval timing varied from each other significantly, with a range of 2-18 s. Sixty one syllable types had been summed up from 18 individuals, a total of 589 syllables, of which 37 shared by 2 individuals at least, and also 24 kinds of specific syllable, accounting for 60.7% and 39.3% respectively. By checking the song spectrogram, none of them had the exactly same repertoire with the others. According to the Jaccard's similarity coefficient (S_j), there were significant differences between Lianhuashan Mountain and Alashan (P=0.001). The results of geographic variation analysis showed that the more adjacent the distribution of its neighbors, the more similar their songs would be.