Sửa lỗi sai dùm mình với. We interviewed 3 classmates and according to our survey, all of them use social networks such as: Facebook, Instagram, Zalo and so on. They spend most of their free time on social networks. When asked what they used them for, they all said that they were for entertainment, relaxation, updating news, activities and status of their friends or share their photos and emotions. Sometimes they also use them to find study documents, watch live lectures and do homework. However, they also have some problems when using social networks as: losing account, inaccurate and unhealthy information, be cheated and distracted from work. In the following, we will learn more about social networks and how to use them properly. In conclusion, there always are two sides to problems and social networks are, too. It is a great and easy place to study and entertain. Although it has some drawbacks, we can fix it easily. The most important thing is that every human must have a proper awareness of social networks and use them appropriately. Social networks play an important role in our life so they greatly affect to daily life of every people. Please always remember that: social networks cannot be your boss, you must be the controller of them.