With the developing of science and technology, an increasing number of young people like to use smart phone or computer to contact others. That’s why social media is becoming a more and more popular way for youth to communicate. As we all know, every coin has two sides. There are many positive and negative effects about whether youth should be use social media. I will discuss two points regarding this issue.Some people consider that it is a common phenomenon for youth to use the social media and it’s very good for them. Almost each young people have a smart phone. They can connect Internet with their phone and communicate with their friends. Furthermore, using social media can keep in touch with friends. There are so many kinds of social media such as FaceBook, twitter and instagram, which young people usually like to use. Photos, pictures and texts can express their state and mood. From SNS, they know who went to zoo yesterday and they know who watch a movie today. If they like, they would talk with each other whenever with messages or videos. It is a good way to chat with video. They can see each other and express feelings through facial expressions.