In a 4-month-old child who is screaming, the first thing to consider is whether there is physical discomfort, and you need to pay attention to whether there are any other accompanying symptoms other than screaming. If the child has a poor mental state, fever, cough, nasal congestion and runny nose, consider a respiratory infection, and the child should be actively treated. If the child is not showing any other signs, but screaming and acting excited, it should be a sign that the child is trying to get the attention of adults and is a sign of early language. At this age, children also need to interact with adults, parents should communicate with their children more, sing children’s songs, tell stories, let the child look at more favorite colors, toys, and thus divert the child’s attention to reduce the possibility of screaming.