3 weeks old children with dry stools can not be defecated, you can use small soap bars, apply laxative Chinese medicine, eat probiotics, as follows: 1, small soap bars laxative: a small bar of soap can be inserted into the anus of children to stimulate intestinal peristalsis, so that the smooth discharge of stools; 2, the application of laxative Chinese medicine: for example, you can apply the hemp seed pill or hemp pill, these two Chinese medicines can play a good laxative effect; 3, eat probiotics: probiotics can effectively adjust the disorder of intestinal flora, so as to relieve the symptoms of dry stools.