In this case, the first thing to consider is whether the interface is artificially destroyed, resulting in the failure of normal access. Another possibility is that the interface is aging all the year round, resulting in poor internal contact of the interface, which leads to the failure of normal connection. The system network also has the phenomenon of unstable signal, which leads to network interruption. In addition, it is not ruled out that there is a problem with the internal network line of the school, which leads to the failure of the interface in the later period. These are all possible causes of interface anomalies.