Children with poor digestion need to strictly control the diet, try to achieve a light diet, and take different methods of conditioning according to the symptoms of the child: 1, acute phase: clinical symptoms are heavy, frequent and severe nausea, vomiting, it is recommended that after 4-6 hours of early fasting, according to the specific needs of the disease, choose whether to continue fasting. If there is a significant improvement in symptoms, it is recommended to gradually start adding complementary foods, and it is not recommended to directly resume the normal amount of food; if the symptoms do not improve, still vomiting frequently, unable to eat and drink normally, it is necessary to give intravenous rehydration in a timely manner. The principle of intravenous rehydration is crystal first and then colloid, and the required concentration of salt or sugar for rehydration should also be noted, and the ratio should be appropriate, and the specific rehydration should be done under the guidance of professional doctors; 2. Diet. If the child has abdominal pain, you can choose to apply heat to the abdomen to improve local abdominal pain. In addition, train your child to have good eating habits from childhood, eat regularly and quantitatively, avoid overeating and partial eating, avoid snacking before meals, and exercise moderately after meals to promote digestion.