It is not recommended to do an enema without an enema device. Enema is the enema bag into the saline or soapy water into the intestinal lumen, the dry feces dilution, the intestinal lumen of the food debris and fecal residue cleaning out, the main purpose is to clean the intestinal tract, do intestinal surgery before the enema is a necessary process, if the occurrence of dry stools caused by the difficulty of defecation, you can also use an enema, to assist in the intestinal tract in the fecal discharge. Enema can stimulate intestinal peristalsis, soften, remove feces, and have cooling, catalytic, dilute intestinal toxicity, reduce absorption, cryogenic solution for hyperthermia patients to cool down the role of the therapeutic purpose. Some enema drugs such as “glycerin enema”, with a long tube of enema mouth, can be at home on their own “enema”, for the disposal of constipation, the effect is better, but for the cleaning of the intestinal tract and other effects are poor. No enema can not blindly self-enema, it is recommended to the hospital in time, under the guidance of the doctor for standardized treatment.