The rectal irrigation is definitely better than the infusion, these are two different ways of treatment, the infusion is through the drug into the veins, running to the treatment organs and play a therapeutic effect of a way. The rectal instillation is the direct instillation of drugs into the intestine, through the intestinal absorption to play a therapeutic effect, rectal instillation has the following benefits compared to the infusion: First, less side effects, because it is a local medication, adverse drug reactions, dependence, resistance, etc., are less than the intravenous infusion. The effect is faster, rectal drug delivery is mainly for the treatment of intestinal diseases, or pediatric fever, etc., the direct effect, the effect is faster, while for intestinal ulcerative diseases, the drug directly on the wound, the effect is much more obvious than the infusion, the clinical also need to be based on a comprehensive judgment of different diseases, choose the appropriate treatment, can not be generalized.