For children of this age, if there is a humming situation and the sleep is not particularly restful, you need to consider the following reasons: First, the child is not sick, you need to measure the child’s body temperature. If the child’s body temperature is normal, it should not be a big problem. Second, you need to consider whether the child has a gastrointestinal disorder. The child’s age is relatively young and the gastrointestinal function is relatively weak. If too much milk is eaten or the mother’s diet has changed, there may be gastrointestinal disorders and humming may occur. This may also happen if the concentration of milk powder changes or the brand of milk powder changes. You need to massage your child’s abdomen to promote intestinal peristalsis and improve gastrointestinal function. In addition, you can give your child appropriate oral intestinal microecological preparations to improve the intestinal microecological environment. Third, the change of the environment. If the child’s environment is too high in temperature, low in humidity, too many covers and too many clothes, it may cause the child to grumble and be uncomfortable, and also appear to sweat more. Parents should control it properly and add or remove clothes appropriately.