Babies can drink glucose after a cold. Babies mostly have loss of appetite, even nausea, vomiting, diarrhea and other gastrointestinal symptoms after a cold, and sometimes fever, and there is excessive water loss, as well as insufficient diet and calorie intake, so they can take diluted glucose solution orally to replenish the extra lost or insufficient calories and water. Glucose, as a simple sugar, does not increase the burden on the gastrointestinal tract and can be used as an additional supplement. Now commercially available is the finished product called hypotonic oral rehydration salts in pharmacies, which can replenish water, as well as the corresponding electrolytes and glucose, so as to replenish water and prevent electrolyte disorders and increase calorie supplementation, which is convenient and practical.