If the baby’s tummy is very hard, the following causes are mainly considered: 1. The stool has not been solved for many days. Because the stool is stored in the tummy for a long time, thus causing a very hard tummy. The hard tummy is mainly in the child’s lower left abdomen. When you press your child’s tummy, the child will appear to be crying and restless. If you apply laxative medicine, such as probiotics, or open-loop laxative, your child’s stool will be lifted quickly. 2, intestinal obstruction and other surgical emergency abdominal disease. If the child does not stool for a long time, and the mental state is not good, obviously crying and restless, may also appear high fever and other situations, can be considered due to intestinal obstruction, need to timely abdominal CT or ultrasound to confirm the diagnosis. If it is diagnosed as intestinal obstruction, the child needs to be treated with surgery in time.