Adults with colds can easily infect children, colds can be transmitted through the respiratory tract, so adults with colds wear masks to prevent children from being infected is very good, but just wear a mask is obviously not enough, colds can also be transmitted through close contact, so be sure to pay attention to hand hygiene, hand hygiene is not good easy to make the child infected. There are also colds that should be treated with medication in a timely manner. Only by curing the cold and removing the pathogens will the child have a smaller chance of being infected. Adults with colds must closely observe the child’s situation, once similar cold symptoms, such as nasal congestion, runny nose, sneezing, coughing, nausea, vomiting or fever, should also be to the regular hospital for examination and treatment.