Mental depression of newborns is mainly manifested in decreased appetite, prolonged sleep time and other aspects, specifically analyzed as follows: 1. Decrease in appetite: Decrease in appetite mainly refers to the newborn’s milk intake is less than usual, and will also be accompanied by sucking difficulties, weakness and so on. 2. Prolonged sleep: newborns generally sleep about 18 hours to 22 hours a day, if they keep sleeping, difficult to wake up, or sleep more than 4 hours at a time, it may also be the case of mental depression. Newborn depression may be due to fever, rash, diarrhea and other factors, parents found that newborns have the phenomenon of depression, you need to go to the hospital in a timely manner to conduct relevant examinations, clear reasons for the active treatment of the symptoms.