February infant crying may be caused by hunger, bowel movements, environmental factors, colic, etc. 1. Hunger: February infant stomach capacity is small, usually in the milk 3 to 4 hours will need to feed once, and the baby will not speak, there is no other way of expression, will express hunger through crying. 2. Urination and defecation: When babies poop or urinate, if they don’t change their diapers in time, they will feel uncomfortable, which will cause them to cry. 3. Environmental factors: February babies sleep for a long time every day, if the environment in which they sleep is noisy, it will affect their sleep and lead to crying. 4. Intestinal colic: it is a relatively common symptom in infants, mainly caused by paroxysmal strong contraction of the smooth muscle of the intestinal wall, and it is more common at night. February infant crying if the symptoms continue to be unrelieved, should be timely to the hospital to identify the cause of the targeted treatment or treatment.