To achieve remote measurements of wind turbine vibration, a novel wind turbine state monitoring method was proposed in this study.Coherent Doppler lidar was used to detect low-frequency vibration of a wind turbine. The telemetry measurement, vibration spectrum data analysis, and all phenomena observed in the experiment were tested and studied. The measurement was divided into two parts.First, the top of the wind turbine was scanned via Doppler lidar at a distance of approximately 675 m, and vibration spectrum data were processed using discrete spectrum correction technology to extract the vibration state parameters.Second, a fixed target was measured, and the echo signal was processed using the same data processing method. Furthermore, system and measurement errors were evaluated. The results show that the coherent Doppler lidar is efficient at low-frequency vibration detection for a wind turbine with a vibration frequency of 0~2.5 Hz and a vibration speed of 0.1~3 m/s.