During the 2014 breeding season, from July to August, song from 41 male dusky warbler in Saihanba Forest Farm,Hebei Province,were analyzed, with an average of 47 songs from each individual. It was found that maximum song frequency was 7.04 ± 0.89 kHz, minimum song frequency was 1.75 ± 0.30 kHz, beginning song frequency was 4.53 ± 2.00 kHz, end song frequency was 3.22 ± 1.43 kHz, duration of song was 1.24 ± 0.32 s, and 6.50 ± 1.91 syllables in each song. 49 syllable types was found based on the structure in spectrum form total 41 males, and 2 to 30 syllable types was sung by each male. The relationship between song similarity and spatial distance was tested, but not differ significantly from zero in our study population (Mantel test，P=0.657).