At the beginning of 2016, Amazon broke the news that they planning to use UAV distribution. On an interview, they put forward the target of UAV distribution and when the user place an order they hope to be able to complete the delivery within 30mins. With the UAV is more and more popular, at the same time the security and privacy questions are also facing emerging. But I think it is can't stop the more and more hobbyist passion. After all, the UAV application is more and more close to life. For the most male, when they were young they are crazy the RC car or RC plane. But when they face the UAV really fly ten meters or hundreds meters high altitude, the beginner is not able to get started. Due to lake of experience, and not enough to understand the performance of UAV itself, external environment of the flight is not sensitive and other reasons, it is easy to "crash". To avoid this, I will to share the tips about UAV flight safety.