One and a half year old baby does not eat may be caused by climatic factors, at this time without special treatment; may also be due to poor dietary habits or dietary structure is unreasonable, at this time can adjust the eating habits and structure, appropriate physical exercise; may also be a lack of trace elements, at this time need to supplement the trace elements. 1. Climatic factors: high temperature, high humidity, can affect the gastrointestinal function, reduce the secretion of digestive juices, digestive enzyme activity, gastric acid reduction, etc., can make the baby does not love to eat, so in the summer of the year to the children’s poor appetite phenomenon for the obvious, but also will be called this special summer anorexia. You can increase exercise to accelerate energy consumption and promote appetite. But avoid strenuous exercise 30 minutes before meals. 2. Poor dietary habits or dietary structure is not reasonable: vegetarian children eat more snacks; summer intake of cold drinks, too many drinks and meals are not regular; parents overly distracted by the child’s diet and other undesirable factors can affect the child’s appetite, this time, you can control snacks, do not eat snacks before meals; parents should also pay attention to meat and vegetables, coarse and fine, dry and sparse collocation. 3. micronutrient deficiency: if there is a zinc deficiency, oral zinc gluconate oral solution. One and a half year old baby does not eat there are many other reasons, it is recommended to consult a doctor in a timely manner, assessed by a specialist, improve the relevant examination, to be targeted treatment or treatment.