Few people had mobile phones ten years ago. But now mobile phones have become quite common, and even high school students may have one. But we want to know if this is a good thing? It goes without saying that mobile phones bring us many benefits, such as chatting, sending and receiving emails, taking photos, playing games and so on wherever we are. It will be very helpful if we are in an emergency. On the other hand, it is very attractive to our high school students. It may have a bad influence on us. After all, mobile phones have changed our lives and will continue to change. We must use mobile phones reasonably, which is the most important and necessary.