If your baby has fever and diarrhea, it is most likely caused by an intestinal infection, first of all, it depends on what kind of stool it is. If there is something like snot in the stool, or even blood, it is generally considered more likely to be bacterial; if the stool is watery or egg-like stool, it is generally considered to be viral enteritis, in order to better distinguish whether it is a bacterial or viral infection, it is best to have the stool routinely tested, and if it is bacterial enteritis, it is best to give the baby anti-inflammatory drugs. The overall principle of treatment is to prevent dehydration and electrolyte disturbance, regardless of whether it is a viral or bacterial enteritis. This is the case, you can buy oral rehydration salt to drink water, every poop, try to drink about 50ml, can effectively prevent dehydration, while eating probiotics to regulate the intestinal flora.