Route surveying refers to surveying for the planning and construction of facilities built over a narrow and long distance such as roads, railroads, waterways, pipelines, transmission lines, and ropeways. The general route surveying method is an important process so that the center of the route is connected and staked, and vertical and cross-sectional surveys are performed along the center line to calculate the amount of construction work according to the slope and plan height of the route, and to prepare detailed drawings after skeleton surveying. If various basic drawings are calculated using an unmanned aerial vehicle for such route surveying, it is believed that the effects of shortening the process and reducing construction costs can be obtained. Therefore, this study attempted to contribute to the improvement of reliability in the application of route surveying using an unmanned aerial vehicle by deriving an optimal photographing technique by conducting route photography in various ways.