The sunken temples of infants may be a normal physiological phenomenon, or it may be pathologic, such as dehydration, developmental deformities, and so on. 1. Physiological phenomenon, due to the infant skull is not yet fully developed, the newborn baby temples more sunken, this is a normal phenomenon, will improve with the development of the skull. If the baby sleeping position is not appropriate will also cause the temple area is pressed, the situation of depression, need to promptly adjust the sleeping position. 2. Pathological factors: dehydration, if the baby appeared in a short period of time, sunken temples, need to rule out dehydration, the baby has a history of sweating, vomiting, diarrhea and other dehydration, need to go to the hospital pediatrics, give symptomatic treatment; developmental deformities, such as structural loss of skull, through the improvement of the head CT and other related examinations can be clear condition. The sunken temples of infants need to be closely observed, and if the baby has an abnormal reaction, it is recommended to consult a doctor in time.