The invention discloses a UAV remote sensing image processing system for transmission line geological hazard detection. The system firstly subjects an obtained UAV remote sensing image to gray stretching and normalization, extracts feature points, performs classification according to the feature points or information such as the time and the site acquiring the UAV remote sensing image. A user can set a query condition as required in order to query the specific UAV remote sensing image and to retrieve the specific UAV remote sensing image, shortens the time for searching out the image for workers, and improves the work efficiency. The gray stretching and normalization of the UAV remote sensing image improves the accuracy of the UAV remote sensing image and the geological hazard detection accuracy.