Lactulose oral solution can be used in accordance with the doctor’s instructions if there are indications, infants can be taken orally 5ml each time, 1 to 2 times a day, the use of 2 to 3 days when there is no significant improvement in the symptoms need to stop using the drug, and promptly consult a doctor. Lactulose oral solution is mainly used for the treatment of chronic constipation, by increasing the amount of intestinal water retention, promote intestinal peristalsis, but also due to the treatment and prevention of hepatic coma. Infants in the case of indications can be used in accordance with the doctor’s instructions, each time can be taken orally 5 ml, 1 to 2 times a day, the use of 2 to 3 days when the symptoms do not significantly improve the need to stop using the drug, and promptly seek medical attention. Prohibited when suffering from acute inflammatory bowel disease, intestinal obstruction or subobstruction syndrome, digestive tract perforation and other diseases; allergic to lactulose oral solution and its components; diabetes mellitus, galactosemia patients are prohibited; intolerant to lactose galactose and other intolerant infants are prohibited. Oral lactulose oral solution for infants must be used under the guidance of a doctor, and should not be used on its own to avoid serious consequences.