3-year-old children do not eat anorexia may be due to climatic factors, zinc deficiency, improper diet, intestinal flora imbalance, etc., can be treated through general treatment and drugs and other methods. 1. Climatic factors: High temperatures and high humidity can affect gastrointestinal function, reduce the secretion of digestive juices, reduce the activity of digestive enzymes, reduce gastric acid, and so on, which is also the cause of anorexia. Therefore, children’s poor appetite is obvious in summer, which is also known as summer anorexia. No special treatment is needed at this time. 2. Zinc deficiency: If a zinc deficiency causes a 3-year-old child to not eat and anorexia, parents can choose to use zinc gluconate oral solution, zinc gluconate chewable tablets and other medications for the child’s treatment. 3. Improper diet: should be timely for children to adjust their eating habits, regular meals, appropriate control of snacks, do not eat snacks before meals, so as not to affect the appetite of elevated blood sugar, after meals to eat fruit, wake up nap can focus on eating some pastries and sweets, and so on. Parents can also often change the pattern of diet varieties, meat and vegetables, coarse and fine, dry and sparse collocation, in order to achieve a balanced nutritional diet, do not let the child partiality. 4. intestinal flora imbalance: parents can, bifidobacteria under the guidance of a professional physician for children to choose to use pediatric lactobacillus tablets four live bacteria tablets and other drugs for treatment. All of the above drugs need to be used under the guidance of a doctor to avoid self-medication. As the cause of 3-year-old children do not eat anorexia causes more, parents should take the child to the hospital in a timely manner for examination and diagnosis, clear causes for targeted treatment, to avoid affecting the child’s physical health and growth and development.