The manifestations and symptoms of constipation in infants usually include: decreased frequency of bowel movements, hard feces, and difficulty in defecation. 1. Decrease in the number of bowel movements: under normal circumstances, the number of bowel movements of infants should be about 1 to 2 times a day, when constipation occurs, the number of bowel movements may be significantly reduced, or even a few days without bowel movements. 2. Hard stools: normal infant stools should be soft and mushy or creamy, when constipation occurs, the stools will be dry and hard. 3. Difficulty in defecation: Due to the presence of dry stools, infants will have difficulty in defecation, which may cause pain, bleeding, and crying during defecation. In addition, constipated infants may also have loss of appetite, crying, bad breath and other accompanying symptoms, after the occurrence of the above symptoms, parents are advised to take their children to the doctor for examination and treatment.