20 months baby diarrhea can not be food treatment, need to maintain a light diet, easy to digest, and at the same time under the guidance of the doctor with medication. Food only has the role of supplemental vitamins, proteins and other nutrients, does not have any therapeutic and health effects, that is to say, the baby diarrhea can not be treated through food, but to maintain the principle of light, easy to digest diet, can reduce the burden of the gastrointestinal tract, for the body to supplement the nutrients, to help the recovery of the disease. 20 months baby diarrhea can eat more millet porridge, noodles and so on, at the same time need to take less food way to eat, so as not to aggravate the situation of diarrhea, such as the situation is serious, but also need to use under the guidance of a doctor, such as bacillus subtilis bilateriae loose regulation of intestinal flora, montelukast antidiarrheal and other treatments. If there is a bacterial infection can use cefixime and other drugs to treat. If the baby’s diarrhea is caused by weather, allergies and other factors, you can properly add clothing, avoid allergens and other ways to improve, generally faster recovery. The baby’s diarrhea needs to be taken seriously enough, and the cause needs to be investigated in time for targeted treatment. The above drugs need to be used under the guidance of a doctor.