Dry and hard stools in infants may be caused by physiological reasons or pathologic reasons, and the causes are different, so are the treatments. Different causes are treated differently, such as changing feeding habits, surgical treatment and so on. 1. Physiological causes: Inadequate feeding and insufficient water intake may lead to dry and hard stools. If it is caused by improper feeding, it is necessary to change feeding habits and pay attention to moderate hydration. If the infant has reached 6 months, you can moderately add some vegetable puree, supplement dietary fiber, to help improve the situation of dry stools. 2. Pathological causes: If you change the feeding habits, the baby still appear dry stool difficult to solve the situation, may be caused by disease, such as congenital megacolon disease, you need to go to the hospital in time, usually need to carry out surgical treatment, the specific treatment plan needs to be decided by the doctor. In addition to congenital megacolon disease, other diseases may also cause infants to have dry and hard stools, such as enteritis may also lead to narrowing of the intestinal tract, making the stools dry and hard to pull. If an infant has dry and hard stools for a long period of time, and there is no improvement even after adjusting feeding habits, it is necessary to go to the hospital promptly to clarify the cause of the problem.