Reasons why minors can't enter Internet cafes: 1, stipulated by the state; 2. Minors' self-control is too weak, and they are easy to indulge in the network, which is extremely harmful to themselves; 3. There are many things on the Internet that are not suitable for children, which will affect the growth and psychological changes of minors; 4. Not studying hard is harmful to their physical and mental health; 5. Minors don't have a mature world outlook, and they are easily influenced by negative things on the Internet, especially now many Internet cafes are informal and have security risks.