Abstract: Taking the Guangzhou New TV Tower under construction as a test bed, this paper presents a case study of monitoring the dynamic characteristics of high-rise building under typhoon and normal wind excitation using GPS measurement. Dynamic displacement time histories of one measuring point on the top of the TV Tower are obtained. From the FFT analysis of the displacement time histories, the lower few natural frequencies of the TV Tower are obtained. The identified natural frequencies from GPS measurement are compared with those from acceleration measurement and from finite element analysis, good agreements are found. This indicates that it is practical to monitor the dynamic characteristics of high-rise building using GPS measurement.