Eight months baby constipation can be given oral probiotics, such as clostridium casei live bacterial powder, mummy love, etc., in order to make the intestinal flora balance conducive to defecation. In addition to this, we must pay attention to the causes of constipation, according to the corresponding results to give the appropriate method, the following common situations: 1, diet structure, pay attention to eat more food rich in crude fiber, such as celery, spinach, fungus, moderate amount of coarse grains. 2, pay attention to the right amount of drinking water, eat more fresh vegetables and fruits, so that the intestinal tract to maintain moisture. 3, so that the baby more exercise crawling or clockwise massage around the navel to promote intestinal peristalsis, facilitate defecation. 4, if after the above, the baby can give oral probiotics, such as Clostridium casei bacilli powder, such as mamma love and so on to make intestinal flora balance. 4, if after the above methods, still constipation obviously no improvement, then we should pay attention to congenital anal stenosis or congenital colonic redundancy, etc., and promptly go to the hospital.