4 months baby anorexia may be a normal physiological phenomenon, do not need special treatment, wait for a period of time will naturally recover. If the anorexia is accompanied by other uncomfortable symptoms, it is necessary to consider pathological factors, and need to consult a doctor in time. Anorexia is a common problem that occurs in babies, mainly because the baby’s sensory system and physical development are gradually maturing, and they are curious about everything around them, so they are not too keen on breastfeeding. As long as the baby’s mental state is good and there are no other symptoms of discomfort, there is no need to force the baby to eat milk, and the anorexia problem will gradually disappear in about a month. If the baby does not eat milk and accompanied by poor mental state, fever and other symptoms, to consider whether it is thrush, pharyngitis and other respiratory diseases caused by anorexia, the need to immediately consult a doctor for examination, to determine the cause of the disease under the guidance of the doctor for treatment.