One year old baby food accumulation may be functional dyspepsia, lactose intolerance and other causes, need to apply lactobacillus and other drugs for the cause of treatment. 1. Functional dyspepsia: the gastrointestinal function of one-year-old babies is not yet fully developed, improper feeding, adding too much complementary food, eating too much hard-to-digest food; sleep is not good; abdominal cold and other conditions may lead to indigestion and food accumulation. You can take medicines such as Jianqi Xieji Oral Liquid, Shenqu Xieji Oral Liquid, etc. In addition, you can apply hot compresses or gently rub the abdomen to promote digestion. 2. Lactose intolerance: children with congenital lactase deficiency may not be able to digest the lactose in breast milk, cow’s milk, goat’s milk, cheese, etc., which may lead to accumulation of food. Probiotics, such as bifidobacteria, clostridium casei, etc., can be taken to regulate the intestinal flora and improve the intestinal function; lactase can alleviate intestinal flatulence and improve the function of the digestive tract, and attention should be paid to feeding foods that do not contain lactose. All of the above medications should be used under doctor’s supervision, avoid self-medication. If your baby is suffering from food retention, it is recommended to consult a specialist for evaluation and treatment.