The baby anorexia is divided into physiological anorexia and pathological anorexia, physiological anorexia may be caused by distraction, teething discomfort, pathological anorexia may be caused by anemia, thrush and other reasons. 1. Distraction: after 3~4 months of life, infants gradually have their own consciousness and begin to be curious about the outside world, so it is easy for them to be inattentive during the time of breastfeeding, and there will be physiological anorexia, at this time, infants’ growth and development in all aspects are normal. 2. Teething discomfort: about 6 to 10 months of infants will erupt milk teeth, teething pain, itching and other discomforts, resulting in a decrease in the baby’s appetite, physiological anorexia phenomenon. 3. Anemia: Babies with anemia problems, insufficient blood oxygen in the body may reduce appetite, observe the baby’s face is not good, reduced vitality, weight loss, consider a pathological anorexia. 4. Thrush: Thrush is caused by Candida albicans infection, untreated may cause oral pain, swallowing difficulties, the baby is prone to anorexia. The baby’s anorexia is accompanied by a decrease in appetite, weight gain, often crying and other manifestations, to go to the hospital to check the cause of treatment.