One year and four months old baby does not eat very thin, may be related to poor eating habits, zinc deficiency, etc., need to be targeted according to the cause of the treatment, such as correcting eating habits, zinc supplements, etc.. 1. bad eating habits: if the baby consumes snacks before meals, resulting in poor appetite at meal times, eating too much junk food, may cause the baby malnutrition. Need to change the baby’s eating habits, do not give the baby too many snacks, let the baby eat enough nutritious food, such as meat, eggs and milk, vegetables and fruits, etc., can effectively improve the child’s physical condition. 2. Zinc deficiency: the lack of zinc can lead to the baby’s appetite. At this time, parents need to encourage more zinc-rich foods, such as animal offal, egg yolks, etc., can also follow the doctor’s instructions oral zinc gluconate oral solution to supplement zinc. In addition, there are many other reasons why children do not eat and lose weight, such as oral ulcers, digestive diseases, etc. It is recommended to consult a doctor for a clear diagnosis, and follow the doctor’s instructions for targeted treatment, so as not to miss the opportunity for treatment. All of the above drugs should be used under the guidance of a doctor.