Diarrhea in infants after taking probiotics may be a normal reaction, or it may be caused by overdose. Parents should pay attention to adjust the dose given to the infant, and if there is a long time diarrhea, they should take the infant to the hospital for examination and treatment in time. Common reasons 1, normal reaction: infants themselves have symptoms of indigestion, the number of beneficial bacteria in the body is low, after taking probiotics, the number of beneficial bacteria in the intestine increases sharply within a short period of time, resulting in accelerated intestinal peristalsis, the food residues and toxins accumulated in the intestine are quickly discharged from the body, and the symptoms of diarrhea appear; 2, overdose: infants take too much probiotics, increasing the intestinal decomposition, which may affect the normal intestinal flora, the body produces too much water, causing the symptoms of diarrhea. Treatment 1, if the diarrhea is caused by taking probiotics, parents should suspend the probiotics to the infant, so that the intestine and stomach get sufficient rest, and continue to take them after the symptoms are relieved; 2, the infant itself has indigestion and other conditions, resulting in diarrhea symptoms, should take montelukast to stop diarrhea under the guidance of a doctor, and replenish body fluids and electrolytes to prevent dehydration; 3, when the diarrhea is caused by gastrointestinal inflammation, should be under the guidance of a doctor If the diarrhea is caused by gastrointestinal inflammation, cephalosporin anti-inflammatory drugs should be taken under the guidance of the doctor for treatment, and lactobacillus tablets can be used for conditioning. After diarrhea, infants should pay attention to eating more light and easily digestible food, such as rice porridge and noodle soup, so that the stomach and intestines can get sufficient rest. Eat more foods rich in dietary fiber, such as leeks, cabbage, corn, bananas, apples, etc., to facilitate digestion and absorption and reduce the burden on the stomach and intestines.