Indigestion can cause constipation, as follows: 1, the gastrointestinal digestive function is reduced, can not eat into the food digestion, absorption, food in the gastrointestinal stagnation will lead to constipation, difficult to discharge, manifested as a reduction in the number of stools, the number of stools less than 3 times a week, and fecal dry, hard, small amount. 2, indigestion, also known as functional dyspepsia, is a group of clinical syndromes, the main symptoms for the upper Abdominal distension and pain, accompanied by nausea, belching and acid reflux, vomiting, hiccups, loss of appetite. For patients with a weak spleen and stomach can also lead to diarrhea, showing an increase in the number of stools, shapeless stools or with undigested food. 3, indigestion is not the only cause of constipation, low water intake, unreasonable diet structure, do not pay attention to exercise and other bad habits, or colon and anus disease can also lead to constipation.