This article takes privacy protection in minors' use of short videos as the starting point. It first analyzes the current conditions of their use of online short videos， including the popularity of short videos， intrusion of privacy， and lack of moral values in platform providers. It then analyzes the effects of privacy loss on personal safety， future development and social credit ratings. Finally， policy recommendations are proposed on three levels regarding laws， platforms and the family. The authors argue that laws should be improved， and supervision enhanced； moral values should be clarified for algorithms and platforms should have better self-discipline； guardians should protect minors' privacy and raise their awareness of privacy protection.