Causes of functional dyspepsia in children include increased visceral sensitivity, Helicobacter pylori infection, and dietary factors. Treatment includes adjusting dietary structure, acid suppression, promoting gastrointestinal digestion and other symptomatic treatments. Functional dyspepsia in children is generally caused by increased sensitivity of internal organs, H. pylori infection, dietary factors and so on. Adjust the dietary structure to reduce the intake of greasy, acidic, spicy, hot and hard foods to minimize the stimulation of sensitive internal organs. Consuming more easily digestible food may help treat the disease. For those caused by Helicobacter pylori infection, anti-HP treatment can be carried out using quadruple therapy such as omeprazole + bismuth pectin + amoxicillin + clarithromycin. If necessary, acid suppressants such as ranitidine and omeprazole can be used to relieve symptoms such as acid reflux and nausea. The use of digestive aids such as compound pepsin powder can promote gastrointestinal motility and relieve symptoms such as early satiety. Children with functional dyspepsia are advised to seek prompt medical attention, and the above medications should be used under the guidance of a medical professional.