18 months baby viral cold diarrhea should be taken general treatment, drug treatment. 1. General treatment: baby viral cold and diarrhea, parents should pay attention to the baby in a timely manner to replenish water, at the same time to pay attention to abdominal warmth. Secondly, parents need to pay attention to the diet to light, easy to digest food, avoid greasy food. 2. medication: for diarrhea symptoms, parents can follow the doctor’s instructions reasonable application of antidiarrheal drugs, such as montelukast, at the same time with oral rehydration salts, if necessary, can be taken to intravenous rehydration, so as to avoid electrolyte disorders; if the baby is accompanied by systemic symptoms, such as fever to 38.5 ℃, it should be applied in a timely manner to the antipyretic drugs, such as ibuprofen suspension, and so on. 18 months baby viral cold and diarrhea, parents should take the baby to the doctor in a timely manner, under the guidance of the doctor to use the above drugs, can not be used indiscriminately, so as not to lead to adverse consequences.