40 days of the baby two days did not poop, if the baby’s spirit, appetite is good is normal, if the baby has abdominal distension, suffocation, loss of appetite, fever, vomiting, abdominal pain, etc. is not normal, such as constipation, intestinal obstruction. 1. physiological situation: the newborn baby gastrointestinal tract function is not perfect, with the growth and development, digestion and absorption ability to enhance, and breast milk food residue, there may be a few days once the stool, stool properties are normal, no defecation difficulties, the baby’s spirit, appetite is good, it is a normal situation. 2. constipation: if the baby has abdominal distension, breathlessness, increased crying, difficulty in defecation, dry stools, blood in the stool, consider the possibility of constipation, mostly due to the replacement of formula milk and other feeding methods to adjust the cause, you can use the Kespelia emergency defecation, more abdominal massage, so that the baby lying on their backs and other activities. 3. Intestinal obstruction: If the baby has obvious abdominal pain, abdominal distension, fever, vomiting, stopping gas, defecation, suggesting that intestinal obstruction may occur, this disease starts rapidly, symptoms are obvious, the need for immediate medical treatment, if necessary, surgical treatment. The baby’s urination and defecation is an important means of assessment, but also need to be combined with the amount of milk, spirit, sleep and other conditions to determine the overall situation, if necessary, seek medical evaluation.