Constipation after drinking a lot of water is usually related to intestinal flora dysbiosis, gastrointestinal dysfunction, intestinal structure changes, according to different causes to take corresponding measures to relieve symptoms. 1, intestinal flora dysbiosis: the original balance of the intestinal flora is broken, food can not be digested and absorbed, long stay in the digestive tract caused by constipation, at this time drinking water can not regulate the microecology of intestinal flora, so can not effectively relieve the symptoms of constipation. Constipation symptoms, you can apply bifidobacterium, compound lactobacillus and other drugs as prescribed by the doctor to regulate the balance of intestinal flora, so as to improve the symptoms of constipation; 2, gastrointestinal dysfunction: usually caused by improper diet, the patient’s intestinal peristalsis is too slow, food residues in the intestinal tract for too long, the water it contains is absorbed, resulting in dry stool, resulting in poor defecation, bloating and abdominal pain and other uncomfortable symptoms. Due to excessive dryness of the stool, a large amount of water within a short period of time can not effectively soften the stool, constipation symptoms still exist, can be applied under the guidance of a doctor domperidone, mosapride and other drugs to promote gastric power, to relieve constipation; 3, intestinal structure changes: such as the presence of polyps, tumors blocking the intestine, causing intestinal obstruction, can appear bloating, abdominal pain, anal stop defecation and exhaust, by drinking water can not change the substantial The lesion cannot be changed by drinking water, nor can the symptoms of constipation be reduced, so fasting, gastrointestinal decompression and fluid supplementation are needed to correct water and electrolyte disorders, and severe cases can be relieved by intestinal torsional repositioning.