Acoustic communication serves important reproductive functions in songbirds. Previous studies have provided evidences to demonstrate the profound effects of human disturbances on acoustic communication in songbirds. In the present study, we aim to focus on the effect of human disturbance on the change rate of song structures in an endemic species of Taiwan, Alcippe morrisonia. Song samples from nine locations at the Shoushan National Nature Park in Kaohsiung City were collected during 2001-2019. We analyzed the yearly changes of acoustic structures of whistled phrases in songs by using the spectrographic cross-correlation analysis. The yearly changes of acoustic structures for each location were associated with the distance to the entrance of the hiking trail. Significant yearly changes were found at the starting and middle locations of the hiking trail. We suggest that human disturbances might play an important role in affecting the change rates of acoustic structures at those locations.