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The Galion lidar is a lidar equipment using the second generation technology. It has the ability to scan all sky and all angles. At present, it is the only three-dimensional scanning equipment on the market. Based on the observation data of Shenzhen 356 m gradient tower and Xilinhot 100 m gradient tower, this paper analyzes the detection performance of Galion Lidar and draws the following conclusions: in PPI mode, the correlation coefficient of wind speed measured by the Galion lidar and gradient tower in Shenzhen is 0.85; the correlation coefficient of wind direction is 0.9; the correlation coefficient of wind speed and wind direction measured by the Galion lidar and gradient tower in Xilinhot is 0.9 and 0.95, respectively; in addition, the correlation of lidar detection results at all angles is good, indicating that the lidar has good detection performance in PPI mode.