The reasons that cause two-month-old babies to cry all the time are generally the following: 1, environmental factors, because the baby’s ability to regulate body temperature is not yet strong enough, if the environment in which the temperature is too high, too low, or the light in the room is too strong, it will make the baby feel uncomfortable and produce the symptoms of crying. 2, hunger, if the mother’s milk is not enough, or the baby who drinks milk powder, due to the parents’ lack of feeding experience, milk powder 3, frightened, because the baby’s nervous system is not yet mature, for the sudden appearance of large sounds, or the sudden appearance of people, objects, etc., will make the baby afraid, the psychology of fear, so that the phenomenon of sleep at night is not solid, always crying. 4, disease causes, such as colds, colic, etc., generally will be Parents should observe carefully, identify and give symptomatic treatment to improve the baby’s crying symptoms.