The reason for not having a bowel movement even after taking electrolytes is that electrolytes do not have a laxative effect, and if constipation occurs, treatment should be chosen according to the patient’s condition. Constipation is defined as a decrease in the number of bowel movements (<3 times/week), dry and hard stools, and difficulty in defecation (e.g. laborious and time-consuming defecation, difficulty in evacuation, feeling of incomplete defecation, etc.). Clinically, except for constipation due to hyperkalemia, usually the administration of electrolytes does not cause defecation, and different treatments should be chosen according to the type of constipation. Treatment includes patient education, medication, biofeedback, and clean enema. 1. Patient education: including drinking more water, eating more vegetables and fruits, developing good defecation habits, increasing physical exercise, enhancing abdominal muscle strength, and avoiding the abuse of laxatives. 2. Pharmacotherapy: including laxatives (such as rhubarb, senna, lactulose, etc.), pro-dynamic drugs (such as mosapride, itopride, etc.), and drugs to regulate intestinal flora (such as bifidobacteria, lactobacillus, etc.). 3. Biofeedback: it can have certain effect on some rectal and anal pelvic floor muscle dysfunction. 4. Clean enema: applicable to those with fecal blockage, available soap and water or salt water. Drugs need to be used under the guidance of a professional physician, not self-medication.