In view of the existing problem that high-rise building fire can not be timely good control, as well as the search and rescue difficulties to the fire scene trapped personnel, design and improvement to the UAV is compolished using SolidWorks and other 3D modeling software, so that it can search for trapped people in time and control the fire situation. Using gel fire bombs to cover objects in the fire, the spread of the fire is controlled. Personnel in the fire is searched and rescued and relief materials is dropped using sensors.