An occasional tap water enema has a negligible effect on the body. If repeatedly enema for a long time, it will have the following effects on the body: 1, intestinal flora dysbiosis, repeated flushing of tap water will affect the homeostasis of the intestinal tract, resulting in intestinal flora dysbiosis, triggering a series of intestinal reactions. 2, intestinal stress, mainly poor grasp of water temperature, hot and cold, may lead to sudden intestinal spasms, severe pain in the intestine. 3, intestinal mucous membrane damage, repeated enemas, intubation is easy to damage the intestinal mucosa. 4, repeated enemas can easily lead to habitual dependence of the person, so that the independent bowel function is weakened and needs to rely on enemas to appear. Therefore, the occasional use can be, if it is because of constipation, it is best to treat from oral medication, really can not be treated before applying the means of enema.