What is the reason why there is no stool for a few days

A few days did not defecate, normal consideration has the following several reasons: First, recent food intake is relatively small, so the stool accumulated in the intestinal tract is also relatively small, so there is no defecation phenomenon; Second, drink less water, and eat mainly fine food, containing less coarse fiber, so stool is relatively small; Third, whether there is intestinal obstruction, intestinal obstruction patients will normally stop defecation exhaust, and there will be nausea, vomiting, abdominal distension phenomenon, normal standing abdominal flat film can be clearly diagnosed; fourth, recently eat less fruits or vegetables, get angry or gastrointestinal motility function is relatively poor, resulting in a few days do not defecate phenomenon.