Baby a few days without stool, may be a physiological phenomenon, may also be constipation, congenital megacolon and other factors caused by massage, drugs, surgery and other methods to relieve. 1. Physiological phenomenon: if the baby a few days without stool, but the baby defecation is not laborious, stool yellow soft stool, this situation is often related to save the belly, is a normal physiological phenomenon, pay attention to observe can, generally do not need special treatment. As long as the timely regulation of diet, eat less and more meals, 10 times a day with a finger to push the anus, is conducive to stimulate the anus to defecate. 2. Pathological factors: (1) constipation: if the baby more than three days or more than seven days without stool, when defecation is difficult, dry black stool, you can use the massage method for relief, can accelerate intestinal peristalsis, promote defecation. Or follow the doctor’s advice to take bacillus subtilis bacillus granules, bifidobacterium bifidum quadruple bacterial tablets and other drugs to regulate intestinal flora, promote defecation. (2) Congenital megacolon: Due to the lack of ganglion cells in the colon, the intestinal tube continues to spasm and the feces stagnate in the proximal colon, resulting in the phenomenon of no bowel movement for a few days, which needs to be treated through timely surgery once diagnosed. If the baby does not have bowel movement for a few days, accompanied by abnormal symptoms, it is recommended to go to the hospital as soon as possible, through the appropriate examination, to clarify the cause of the disease and treatment.