Compared with shooting a scene, the tilted feature image of Digital Eagle mapping camera for uav can reflect the real features of the surrounding, and the tilted feature image can allow the user to more truly reflect the features of the actual situation from multiple angles, making up for the shortcomings of applications based on orthogonal projection and the like. The oblique image can be measured by a single image through the application of the supporting software, and can directly measure the height, length, area, angle, slope, etc. according to the image results, which expands the application of oblique photography technology in the industry. Digital mapping camera can collect building outline textures for various 3D digital city applications. It can effectively reduce the cost of urban 3D modeling by using the characteristics of aerial scale mapping and the texture extracted from the oblique image group can be pasted. Compared with the massive 3D data released by the 3D CTS technology, the image data obtained by the oblique photography technology is much smaller, and the image data format can be networked and shared using the mature rapid publishing technology. The wide application of UAV oblique photography will greatly improve the efficiency of the surveying and mapping industry.