With the rapid development of drone technology, UAVs have been widely used in military, agriculture, measurement and electric power transmission inspection fields. They are particularly useful in the field of aerial photography due to multiple advantages. The drones are light, flexible, easy to operate, with strong applicability and relatively low cost, and help human avoid dangers of working at height. UAV aerial photography technology can rapidly acquire image data, and then use the Smart3D platform for high-precision, high-efficiency real-time 3D modeling. Smart3D has the advantages of high automation, fast modeling, high positional accuracy, and reliable geometry and texture accuracy for large-scale real-world modeling.