To determine if a newborn is uncomfortable, parents can assess the following aspects: First, look at the child’s mental state. If the child’s mental state is not good, such as appearing to sleep all the time or being obviously irritable, it is a sign that the child is uncomfortable. Secondly, look at the child’s milk intake. If there is a significant decrease in milk intake, it means that the child is not feeling well, especially if there is gastrointestinal discomfort, which is more likely to lead to a significant decrease in milk intake. It is important to see if there is any change in the child’s temperature. Due to the fever caused by the infection, newborns are often very uncomfortable and in a bad state of mind, so it is more important to measure the child’s temperature.