2. After landing, all personnel should stay away from the drone until the propeller of the drone completely stops rotating; 3. After the operation is completed, turn off the power supply of the UAV first, and then turn off the power supply of the ground station (remote control and image transmission); Many flying hands often encounter the problems of out-of-control and low-power return. Attention should be paid to 1 return altitude. It is suggested that the return altitude should be as high as possible, at least higher than 60 meters, which can basically avoid the drone hitting the building and causing fried chicken when returning. 2 Try not to use low-power return, so as not to cancel the automatic return after the signal is restored.