One year old baby does not eat, may be physiological factors, may also be oral ulcers, indigestion and other pathologic factors, can take general treatment, if necessary, medication and so on to improve. 1. Physiological factors: a year-old baby who does not eat, but the mental state is good, without any other symptoms of discomfort, to consider the possibility of being disturbed by the outside world, full of curiosity about the outside world, and thus can not concentrate on eating. Need to actively guide, provide diversified meals, at the same time parents do a good example, remove the triggers can be improved. 2. Mouth ulcers: When a baby has an infected ulcer inside the mouth, the pain in the mouth caused by swallowing food may cause the one-year-old baby not to eat. Pay attention to drink more water, at the same time can take some oral vitamin B to repair the oral mucosa. 3. indigestion: baby indigestion delayed gastric emptying, resulting in abdominal distension, abdominal pain, nausea, vomiting, decreased appetite, may also lead to more than one year old baby does not eat. At this time you can use probiotics, compound pepsin powder symptomatic treatment. One year old babies do not eat there are other possibilities, such as zinc deficiency, etc., it is recommended to consult a doctor in time to identify the cause of the cause of treatment, the above medication as prescribed by the doctor.