Tilt photography is a high-tech developed in the field of international remote sensing and surveying in recent years. It breaks through the limitations of traditional aerial surveying cameras that can only obtain orthophotos from vertical angles. By carrying multiple image sensors on the same flight platform, it simultaneously captures real images with spatial information from vertical and oblique angles. 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 caused by the three-dimensional data, and make up for the low defect 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.