Using a bar of soap to pass a stool can be painful and is generally not recommended. Using a bar of soap inserted into the anus to pass a bowel movement does not have a good therapeutic effect, but will also irritate the mucous membrane of the anus, causing discomfort. It is not recommended to plug the soap bar, easy to irritate the perianal skin mucosa, causing mucosal damage. There is also the possibility of damage to the intestinal mucosa, causing intestinal dysfunction. Usually can not be normal defecation may be due to constipation, constipation is mainly due to intestinal and gastrointestinal dysfunction, gastrointestinal peristalsis caused by too slow. Laxative drugs, such as lactulose, four mill soup, etc., can be given to relieve constipation, along with the promotion of gastrointestinal dynamics drugs such as mosapride to relieve constipation, and can be massaged more often to accelerate gastrointestinal peristalsis and promote digestion, to help fecal discharge. If the phenomenon of constipation, it is recommended to go to the hospital in a timely manner, under the guidance of the doctor for treatment, avoid the use of soap bars on their own for laxative, so as not to cause adverse consequences.