Tilt photography is a high-tech developed in the field of international remote sensing and surveying in recent years. It breaks through the limitation that the traditional aerial survey single camera can only obtain orthophotos from vertical angle shooting. By carrying multiple image sensors on the same flight platform, it can simultaneously capture real images with spatial information from different angles of vertical and oblique. In order to obtain more comprehensive texture details, the user presents a real and intuitive world that fits the human eye. The oblique three-dimensional data can realistically reflect the appearance, position, height and other attributes of the object, enhance the high immersion of the three-dimensional data, and make up for the shortcomings of the traditional artificial modeling. At the same time, using the currently popular UAV with tilt camera to carry out terrain mapping and automatic modeling system can bring revolutionary efficiency improvement to the field of surveying and mapping.