11-month-old baby has been diarrhea, may be due to improper feeding, abdominal cold and other non-infectious factors, may also be due to bacterial, viral infections leading to gastrointestinal diseases and other infectious factors caused, need to promptly seek medical advice, follow medical advice for appropriate treatment. 1, non-infectious diarrhea: If the baby is allergic to milk protein, can cause diarrhea all the time, often accompanied by abdominal pain and other gastrointestinal allergy symptoms, symptoms appear after drinking milk or worsen. It is recommended to change the hydrolyzed formula in time, and if necessary, take drugs such as bifidobacterium triptans and Saccharomyces boulardii to regulate the intestinal flora and improve the symptoms. In addition, the baby’s abdomen is cold, can cause gastrointestinal disorders, resulting in diarrhea all the time, can strengthen the abdomen warm, hot compress abdomen, follow medical advice to take bifidobacterium, lactobacillus acidophilus, clostridium typhimurium and other preparations, can help relieve the symptoms of discomfort; 2, infectious diarrhea: 11-month-old baby has been diarrhea, may be related to the diet unclean resulting in gastrointestinal tract infection. At this time, the baby is mostly accompanied by the symptoms of change in the nature of the stool, you can follow medical advice to take antibiotics, such as cefixime, metronidazole and other drugs for anti-inflammatory treatment. If the diarrhea is caused by a viral infection, you can take antiviral pellets and other drugs for antiviral treatment as prescribed by the doctor. Parasitic infections that cause diarrhea in babies are relatively rare, so you should pay attention to hand hygiene and take drugs such as albendazole tablets for deworming if necessary. In addition, 11-month-old baby has been diarrhea, to symptomatic treatment, prevention of dehydration. If the baby’s urine volume is significantly reduced and the mental state is depressed, dehydration is considered to be more serious and usually requires intravenous rehydration treatment.