Enemas usually do not cause bleeding in the intestine. The regular use of enemas and routine operation will not cause bleeding of the intestinal mucosa. Before the enema, the regular health care provider will apply an appropriate amount of lubricant around the anal canal to reduce the damage to the anal and intestinal mucosa from the enema device, prevent the occurrence of intestinal mucosal contusions and prevent bleeding. Enemas are divided into clean enemas and reserved enemas, and the purpose of treatment is different. Clean enemas alone are considered for use by patients with surgery and constipation, while in the case of reserved enemas, they are usually used to treat intestinal diseases and to treat conditions such as pediatric fever. If a non-medical person uses it, applying too little lubricant while operating in an incorrect manner can cause damage to the anal canal and mucous membrane, which can cause local bleeding and other conditions, and can seriously damage the rectal mucosa and cause perforation. If bleeding occurs, you need to go to the hospital first to determine the cause.