The speed and power of quadcopter can be controlled by controlling the motor speed and pulse number. There are four important parts of designing the quadcopter: The mechanical structure、MCU hardware circuit、the control of the four motors、attitude algorithm. Besides, the visual analysis can be realized by deep learning. In recent years, the intelligent navigation technology of aircraft, multi‐aircraft formation control and other new technologies are based on the control of quadcopter. And after combining the visual analysis, quadcopter can be used in a variety of scenarios, community danger inspection, home intelligent elderly monitoring, workshop inspection and so on. This article will expound how to use the quadcopter which combine the visual analysis in the elderly people assistance part.