Doppler wind lidar has been increasingly widely used in various fields such as atmosphere, environment and wind energy in recent years, but the applicability of Doppler wind lidar under complex weather still needs to be studied in depth. In this study, the wind data from the ground-based lidar in Sansha, Fujian Province, is compared with the wind field data observed from August to October 2020 by the ultrasonic wind thermometer on board the boundary layer tower. It is found that the Doppler wind lidar has stable and high accuracy detection performance in horizontal wind speed and wind direction, and the correlation coefficients between the Doppler wind lidar and the ultrasonic wind thermometer reach 0.948 and 0.984. In contrast, the detection error of vertical wind speed observed by the Doppler wind lidar is higher than that of the ultrasonic wind thermometer. The vertical wind speed correlation coefficient from the Doppler wind lidar and the ultrasonic anemometer is only 0.353. It is found that the vertical wind speed error from Doppler wind lidar is correlated with the rainfall intensity, and the maximum vertical wind speed deviation could reach 9 m·s^-1 under strong rainfall.