When your baby has diarrhea, it is important to find out what is causing the diarrhea and then treat the cause. Generally, if your baby has more than 3 bowel movements per day (if there is usually only one), and the nature of the stool has changed, this is diarrhea. Most children with diarrhea may have indigestion, such as a cold stomach or eating something that is not well digested, so take care of it by keeping the child warm and eating something that is well digested. Some children may have gastrointestinal tract infections, whether viral or bacterial, which can easily cause diarrhea, so you can check your child’s stool routine and determine if antibiotics are needed based on the white blood cells. Regardless of the cause, the overall treatment also includes the particularly important adequate rehydration, drinking water, rice soup, and oral rehydration salts to ensure adequate water intake and a well-digested diet. Probiotics are also useful for most children. If the stool is too thin, you can add some montelukast, and if the stool recovery is slow for children who are breastfeeding you can also add lactase treatment. In short, it is most important to actively look for the cause of the disease, ensure water intake and never get dehydrated.