There is a situation that some children ask for privacy from their parent. However, they post almost everything about their life online. For example, they ask their parents to stay out their bedroom and photograph their wearing to post online. Even after they post online, they still do not want their parents to view and talk to them. They ask privacy from people who really know them but they show their privacy to strangers online. The teens has two separate definition of privacy. One is for real life and the other is for social media world. In the social media world, people include the teens more prefer to show themselves, share ideas and get attentions. The privacy at that time is not important for them. Such as some popular people on Instagram. Parents are supposed to learn the rules of children’s privacy in social media world and give the right direction instead of making conflict.