More than two months baby diarrhea has infectious diarrhea, non-infectious diarrhea, infectious diarrhea treatment includes diet, medication and other treatments, non-infectious diarrhea treatment includes medication and so on. 1. Infectious diarrhea (1) Diet therapy: continue to eat and drink to meet physiological needs, supplement the consumption of disease, and reasonably adjust the diet. (2) Drug therapy: such as for different bacteria, use corresponding antibiotics, such as cefaclor, etc.; the use of bifidobacteria and other intestinal micro-ecological therapy; the use of intestinal mucosal protective agents, such as montelukast; zinc supplementation therapy. (3) Correct water, electrolyte and acid-base balance disorders: intravenous rehydration is necessary for severe dehydration, and calcium gluconate can be used if convulsions and tetany occur. 2. Non-infectious diarrhea (1) If it is caused by disaccharide intolerance, the child should reduce the disaccharide load in the diet. (2) If the diarrhea is caused by allergic diarrhea, attention should be paid to avoid allergic foods. (3) Pharmacological treatment: intestinal mucosal protective agents, such as montelukast, can be applied. If diarrhea occurs in children, clinicians should be consulted as early as possible to clarify the cause of the disease and consume under the guidance of doctors, not blindly use drugs.