3-month-old babies with egg-shaped stools may be related to cold, indigestion, intestinal viral infections, etc., can be treated with general treatment, medication, such as montelukast, bacillus subtilis bacillus granules, oral rehydration salts to treat. Cold: the baby did not increase the clothing in time, the abdomen is easy to cause diarrhea after the cold, the appearance of egg-like stool, you can give the baby more clothes, pay attention to warmth, if necessary, you can give the child the use of montelukast to protect the gastrointestinal mucosa. Indigestion: the baby’s gastrointestinal digestive function is relatively weak, prone to indigestion, the stool is egg-shaped can use bacillus subtilis dictyostelium granules to adjust the stomach and intestines, can help relieve the condition, need to pay attention to the side effects of the drug, such as increased frequency of stool, dependence and other adverse reactions. Enterovirus infection: If it is rotavirus infection, there is no no specific drug, you can use oral rehydration salts to replenish water in time to relieve the symptoms. Need to pay attention to the side effects of the drug, such as drowsiness, vomiting and other adverse reactions. The above drugs need to be used under the guidance of a doctor, it is recommended to take the baby to the hospital in time to do relevant examinations, according to the cause of the treatment.